Preheat your oven to 400°F and line a baking sheet with parchment paper. Cut the spaghetti squash in half lengthwise and place them cut side down on the baking sheet. Bake for 30-40 minutes, or until the squash shreds easily with a fork. Once done, let the squash cool slightly. Use a spoon to remove and discard the seeds, then use a fork to shred the flesh into strands and set aside. I like to let the squash cool for a few minutes before handling so it's easier to shred.

While the squash is baking, season both sides of the chicken breasts with 1/2 teaspoon of kosher salt and a pinch of pepper. Heat a large pan over medium-high heat, then add the butter and 1 tablespoon of vegetable oil. Once hot, sear the chicken breasts on one side until golden brown. Flip the chicken, reduce the heat to low, cover the pan with a lid, and cook until the internal temperature reaches 165°F. Transfer the cooked chicken to a plate and tent with foil to keep warm.

Increase the heat of the same pan to medium, then add the remaining 1 tablespoon of vegetable oil. Add the minced garlic and cook for about 1 minute until fragrant. Pour in the heavy cream and chicken broth, then sprinkle in the Italian seasoning, remaining kosher salt, and parmesan cheese. Stir well and simmer until the sauce is heated through and the cheese is fully melted. I like to use freshly grated parmesan here for the best creamy texture.

Remove the pan from heat and stir in the chopped spinach and drained sun-dried tomatoes. Once the spinach is wilted, add the shredded spaghetti squash from Step 1. Toss everything together until the squash is well coated in the creamy sauce. Taste and adjust seasoning as needed. For a brighter flavor, I sometimes add a squeeze of fresh lemon before serving.

Slice the cooked chicken from Step 2 and either stir it into the creamy squash mixture or arrange it on top. Optionally, scoop the mixture back into the squash shells for a fun presentation. Sprinkle with extra parmesan and chopped fresh parsley if you like. Serve hot and enjoy!