01 - Pat chicken breasts dry with paper towels. Season both sides generously with salt, black pepper, and garlic powder, ensuring even coverage.
02 - Heat olive oil and butter in a large skillet over medium-high heat until butter foams. Add chicken breasts and sear for 5 to 6 minutes per side until golden brown and internal temperature reaches 165°F. Transfer to a plate and tent with foil.
03 - Add minced garlic to the same skillet and sauté for 30 seconds until fragrant, being careful not to burn. Stir in chopped sun-dried tomatoes and cook for 1 minute to release flavors.
04 - Pour in chicken broth while scraping up browned bits from the bottom of the skillet with a wooden spoon. This adds depth to the sauce.
05 - Reduce heat to medium-low. Pour in heavy cream, add Parmesan cheese, and sprinkle Italian seasoning. Stir continuously until sauce is smooth and slightly thickened, about 2 to 3 minutes.
06 - Add fresh baby spinach to the sauce, stirring gently until just wilted, approximately 1 minute. The spinach should still have some texture.
07 - Return chicken breasts to the skillet, spooning sauce generously over each piece. Simmer for 3 to 4 minutes until chicken is heated through. Serve immediately garnished with chopped fresh basil and additional Parmesan cheese.