Easy Sheet Pan Chicken Fajitas

Here are my sheet pan chicken fajitas, with a homemade spice blend of chili powder, paprika, cumin, and cayenne, colorful bell peppers and onions, and tender strips of chicken all roasted together on one pan.

This recipe is a weeknight lifesaver at our house. Everything cooks on a single sheet pan, which means less cleanup and more time to actually sit down and eat together. Plus, the kids love building their own fajitas at the table.

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What Kind of Chicken Should I Use?

For this recipe, boneless, skinless chicken breasts are your best bet since they cook evenly and are easy to slice into strips. That said, chicken thighs also work great if that’s what you have on hand – they’re a bit more forgiving and won’t dry out as easily. If you’re using frozen chicken, make sure to thaw it completely in the fridge overnight before cooking. When you’re ready to prep, slice the chicken into strips about half an inch thick so they cook at the same rate as your peppers and onions.

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Options for Substitutions

This recipe is super forgiving and works well with a few simple swaps:

• Chicken breast: Chicken thighs are a great substitute here and actually stay juicier during cooking. You can also use sliced steak, shrimp, or even portobello mushrooms for a vegetarian version. Just adjust cooking time – shrimp only needs about 8-10 minutes.
• Bell peppers: Any color bell pepper works, or you can mix in poblano peppers for a smokier taste. Even zucchini or mushrooms make good additions if you want to switch things up.
• Individual spices: If you don’t have all these spices on hand, you can use 3 tablespoons of store-bought fajita seasoning instead. It’ll save you time and still taste great.
• Cayenne pepper: This adds heat, so feel free to reduce it to 1/2 teaspoon or skip it entirely if you’re cooking for kids or prefer milder food.
• Cream: Sour cream is the classic choice here, but Greek yogurt works just as well and adds extra protein. You can also use Mexican crema if you can find it.
• Tortillas: Flour or corn tortillas both work – just pick your favorite. You can also serve this over rice or in a bowl if you want to skip the tortillas altogether.

Watch Out for These Mistakes While Cooking

The biggest mistake people make with sheet pan fajitas is crowding the pan, which causes the chicken and vegetables to steam instead of getting those nice caramelized edges – make sure everything is spread in a single layer with some space between pieces.

Cutting your chicken and vegetables into uneven sizes leads to some pieces being overcooked while others are underdone, so aim for uniform strips about 1/2 inch thick.

Since chicken breast cooks faster than you’d think at 400°F, start checking for doneness around the 30-minute mark with an instant-read thermometer (you want 155°F in the thickest part), and if your vegetables aren’t quite tender yet, you can remove the chicken and let the veggies finish cooking for a few extra minutes.

One more tip: add the lime juice right before serving rather than letting it sit, as the acid can make the chicken taste a bit metallic if it sits too long.

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What to Serve With Chicken Fajitas?

I love serving chicken fajitas with all the classic toppings so everyone can build their own perfect bite. Set out bowls of sour cream, guacamole, shredded cheese, salsa, and extra lime wedges for squeezing. On the side, Mexican rice and refried beans make the meal feel complete, or you can keep it simple with just some tortilla chips and store-bought salsa. A light Mexican street corn salad (esquites) is another great option that adds a fresh, crunchy element to balance out the warm, spiced fajitas.

Storage Instructions

Store: Keep your leftover fajita filling in an airtight container in the fridge for up to 4 days. I like to store the chicken and veggies separately from the tortillas so they don’t get soggy. This makes for such an easy grab-and-go lunch during the week!

Freeze: The cooked chicken and peppers freeze really well for up to 3 months. Let everything cool completely, then pack it into freezer bags and squeeze out as much air as possible. Just skip freezing the cream and cilantro, and add those fresh when you’re ready to eat.

Reheat: Warm up your fajita filling in a skillet over medium heat for about 5 minutes, stirring occasionally until heated through. You can also microwave it for 2-3 minutes, but the skillet method keeps the veggies from getting too mushy and gives everything a nice fresh-cooked taste.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 1800-2000
• Protein: 90-110 g
• Fat: 70-85 g
• Carbohydrates: 190-220 g

Ingredients

For the seasoning mix:

• 1.5 tbsp chili powder (not to be confused with pure chile powder)
• 1 tbsp paprika
• 0.5 tsp smoked paprika
• 1 tsp onion powder
• 1 tsp garlic powder
• 1 tsp cumin
• 0.75 tsp cayenne pepper
• 1 tsp sugar
• 1 tsp salt

For the sheet pan:

• 2 large onions (cut into 1/2-inch thick slices)
• 4 bell peppers (any color, cut into 1/2-inch thick strips)
• 1.25 lb chicken breast (cut into 1/2-inch thick strips)
• 2 tbsp cooking oil (I use avocado oil for its high smoke point)
• 1.5 limes

For serving:

• 8 tortillas (warmed before serving)
• 1/2 cup sour cream (I like Daisy brand)
• 1/4 bunch cilantro (freshly chopped)

Step 1: Prepare the Spice Blend and Mise en Place

• 1.5 tbsp chili powder
• 1 tbsp paprika
• 0.5 tsp smoked paprika
• 1 tsp onion powder
• 1 tsp garlic powder
• 1 tsp cumin
• 0.75 tsp cayenne pepper
• 1 tsp sugar
• 1 tsp salt
• 2 large onions, sliced
• 4 bell peppers, cut into strips
• 1.25 lb chicken breast, cut into strips

While preheating your oven to 400°F, combine all the dry spices in a small bowl: chili powder, paprika, smoked paprika, onion powder, garlic powder, cumin, cayenne pepper, sugar, and salt.

Whisk them together so they’re evenly distributed—this ensures every piece of chicken and vegetable gets consistent seasoning.

Meanwhile, cut your chicken breasts into ½-inch thick strips, slice your onions into ½-inch thick slices, and cut your bell peppers into ½-inch thick strips.

I like to cut everything as uniformly as possible so everything cooks at the same rate and gets that nice caramelization.

Step 2: Season and Arrange on Sheet Pan

• prepared chicken and vegetables from Step 1
• 2 tbsp cooking oil
• spice blend from Step 1

Spread all your prepared chicken and vegetables on a large sheet pan (roughly 18×13 inches).

Drizzle the cooking oil evenly over everything, then sprinkle the spice blend from Step 1 over the top.

Using two large spoons or your hands, toss everything together thoroughly until the chicken and vegetables are well coated with oil and seasonings.

Spread the mixture back out in a single, even layer—this is key for getting good browning and caramelization rather than steaming.

Step 3: Roast and Stir Halfway Through

• seasoned chicken and vegetables from Step 2

Place the sheet pan in your preheated 400°F oven and roast for about 18-20 minutes.

At the halfway point, give everything a good stir to ensure even cooking and browning.

Continue roasting for another 15-20 minutes until the chicken is cooked through (an instant-read thermometer should read 165°F in the thickest piece) and the vegetables are tender with some charred edges.

I find that by stirring halfway through, you get better color on all sides without overcooking the chicken.

Step 4: Finish with Lime and Serve

• cooked chicken and vegetables from Step 3
• 1.5 limes
• 8 tortillas
• 1/2 cup sour cream
• 1/4 bunch cilantro, freshly chopped

Remove the sheet pan from the oven and immediately squeeze fresh lime juice over the hot chicken and vegetables—this brightens all the spices and adds a fresh contrast to the richness.

Give everything a quick toss to distribute the lime juice evenly.

Warm your tortillas if you haven’t already, then serve the fajita mixture with sour cream, fresh cilantro, and lime wedges on the side so guests can customize their own fajitas.

Easy Sheet Pan Chicken Fajitas

Delicious Easy Sheet Pan Chicken Fajitas recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 35 minutes mins

Total Time 55 minutes mins

Servings 4 servings

Calories 1900 kcal

Ingredients

  

For the seasoning mix::

• 1.5 tbsp chili powder (not to be confused with pure chile powder)
• 1 tbsp paprika
• 0.5 tsp smoked paprika
• 1 tsp onion powder
• 1 tsp garlic powder
• 1 tsp cumin
• 0.75 tsp cayenne pepper
• 1 tsp sugar
• 1 tsp salt

For the sheet pan::

• 2 large onions (cut into 1/2-inch thick slices)
• 4 bell peppers (any color, cut into 1/2-inch thick strips)
• 1.25 lb chicken breast (cut into 1/2-inch thick strips)
• 2 tbsp cooking oil (I use avocado oil for its high smoke point)
• 1.5 limes

For serving::

• 8 tortillas (warmed before serving)
• 1/2 cup sour cream (I like Daisy brand)
• 1/4 bunch cilantro (freshly chopped)

Instructions

 

• While preheating your oven to 400°F, combine all the dry spices in a small bowl: chili powder, paprika, smoked paprika, onion powder, garlic powder, cumin, cayenne pepper, sugar, and salt. Whisk them together so they're evenly distributed—this ensures every piece of chicken and vegetable gets consistent seasoning. Meanwhile, cut your chicken breasts into ½-inch thick strips, slice your onions into ½-inch thick slices, and cut your bell peppers into ½-inch thick strips. I like to cut everything as uniformly as possible so everything cooks at the same rate and gets that nice caramelization.
• Spread all your prepared chicken and vegetables on a large sheet pan (roughly 18x13 inches). Drizzle the cooking oil evenly over everything, then sprinkle the spice blend from Step 1 over the top. Using two large spoons or your hands, toss everything together thoroughly until the chicken and vegetables are well coated with oil and seasonings. Spread the mixture back out in a single, even layer—this is key for getting good browning and caramelization rather than steaming.
• Place the sheet pan in your preheated 400°F oven and roast for about 18-20 minutes. At the halfway point, give everything a good stir to ensure even cooking and browning. Continue roasting for another 15-20 minutes until the chicken is cooked through (an instant-read thermometer should read 165°F in the thickest piece) and the vegetables are tender with some charred edges. I find that by stirring halfway through, you get better color on all sides without overcooking the chicken.
• Remove the sheet pan from the oven and immediately squeeze fresh lime juice over the hot chicken and vegetables—this brightens all the spices and adds a fresh contrast to the richness. Give everything a quick toss to distribute the lime juice evenly. Warm your tortillas if you haven't already, then serve the fajita mixture with sour cream, fresh cilantro, and lime wedges on the side so guests can customize their own fajitas.