Preheat your oven to 400°F. While it heats, prepare the jalapenos by carefully cutting each one in half lengthwise and removing all seeds and membranes with a small spoon or knife. Pat them dry with paper towels to remove excess moisture—this helps the filling stay creamy rather than watery. Arrange the halved peppers cut-side up on a baking sheet lined with parchment paper.
In a bowl, combine the softened cream cheese, garlic powder, freshly grated cheddar, and chopped chives. Mix thoroughly until you have a smooth, cohesive filling with no lumps. I like to use a fork to blend everything together—it gives you better control and ensures the garlic powder is evenly distributed. Taste and adjust seasoning if needed.
In a separate bowl, combine the panko breadcrumbs with melted and slightly cooled butter, stirring until the crumbs are evenly moistened and clumped together slightly. This creates that satisfying golden crunch when baked. Add the smoked paprika and mix to distribute the flavor and color throughout.
Spoon or pipe the cheese filling mixture from Step 2 generously into each prepared jalapeno half, mounding it slightly in the center. Top each filled pepper with a heaping spoonful of the buttered breadcrumb mixture from Step 3, pressing gently so it adheres to the cheese. I find that slightly overfilling the crumbs creates irresistibly crispy-edged poppers when they bake.
Place the baking sheet in your preheated 400°F oven and bake for 18-22 minutes, until the cheese is melted and bubbling and the breadcrumb topping is golden brown. The exact time depends on the size of your peppers and your oven, so check at 18 minutes and look for that beautiful golden color on the crumbs.
Remove the baking sheet from the oven and let the poppers cool for 5-10 minutes before serving. This cooling time allows the filling to set slightly so it won't ooze out immediately when you bite into them, and it brings the temperature to a more comfortable eating heat.