01 - Pat the 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 shimmering. Add chicken breasts and sear for 5–6 minutes per side until golden brown and cooked through (internal temperature reaches 165°F). Transfer to a plate and tent with foil.
03 - In the same skillet, add minced garlic 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 their oils.
04 - Pour in chicken broth, using a wooden spoon to scrape up any browned bits from the bottom of the pan. Reduce heat to medium-low and add heavy cream, Parmesan cheese, and Italian seasoning. Stir constantly until sauce is smooth and slightly thickened, about 2–3 minutes.
05 - Add fresh spinach to the sauce, stirring gently until wilted, approximately 1 minute. The spinach should be evenly distributed throughout the creamy sauce.
06 - Return chicken breasts to the skillet, spooning the sauce generously over the top. Simmer for 3–4 minutes until chicken is heated through. Serve immediately garnished with fresh chopped basil and additional Parmesan cheese.