Prep the chicken: Pat chicken dry. Season both sides with salt, pepper, garlic powder, and onion powder.
Lightly dredge in flour, shaking off excess.
Get the pan hot: Heat olive oil in a large skillet over medium-high. When shimmering, add the chicken in a single layer. Don’t crowd the pan.
Sear to golden: Cook 3–5 minutes per side, depending on thickness, until deep golden and nearly cooked through.
Transfer to a plate; tent with foil.
Build the flavor base: Reduce heat to medium. Add butter to the skillet. Stir in minced garlic and a pinch of red pepper flakes.
Cook 30–60 seconds until fragrant, not browned.
Deglaze: Pour in chicken broth. Scrape up brown bits with a wooden spoon. Simmer 2–3 minutes to reduce slightly.
Creamy sauce time: Stir in heavy cream and Italian seasoning.
Simmer gently 2 minutes. Avoid a rolling boil to prevent splitting.
Add parmesan: Sprinkle in the parmesan gradually, stirring until smooth. The sauce should thicken and coat the spoon.
Balance the flavors: Add lemon juice.
Taste and adjust salt and pepper. If too thick, splash in extra broth or cream; if too thin, simmer another minute.
Finish the chicken: Return chicken and any juices to the pan. Spoon sauce over the pieces.
Simmer 2–4 minutes until the chicken reaches 165°F internal temperature.
Garnish and serve: Stir in parsley. If using spinach or sun-dried tomatoes, fold them in now. Serve hot over pasta, rice, or with crusty bread.