Cook the Pasta: Boil pasta in salted water until al dente. Reserve ½ cup pasta water, then drain and set aside.
Sear the Chicken: Pat chicken dry and season with salt, pepper, and garlic powder. Heat oil and butter in a skillet. Sear chicken for 4–5 minutes per side, until golden. Set aside.
Sauté the Aromatics: In the same skillet, sauté garlic for 30 seconds, then add sun-dried tomatoes. Cook 1–2 minutes.
Make the Sauce: Pour in chicken broth to deglaze the pan. Stir in heavy cream, parmesan, Italian seasoning, and red pepper flakes. Simmer until slightly thickened.
Combine: Add pasta to the sauce and toss to coat. Slice chicken and return to the pan. Let simmer for 2 minutes.
Serve: Top with fresh herbs, more parmesan, and cracked pepper. Enjoy warm.