Pat the chicken breasts dry with paper towels to remove excess moisture. Season both sides generously with salt and black pepper. This step helps the chicken develop that beautiful golden crust when seared.
Heat olive oil in a large skillet over medium-high heat. Once hot, add the chicken and sear for 2–3 minutes on each side until lightly golden. You don’t need to cook it through — just get some color. Transfer the chicken to a baking dish.
In the same skillet, reduce the heat and melt the butter. Add the minced garlic and cook until fragrant, about 30 seconds. Pour in the chicken broth and stir, scraping up any browned bits from the pan. Stir in heavy cream, Parmesan cheese, Italian seasoning, and red pepper flakes. Whisk until smooth and creamy.
Pour the creamy sauce over the chicken breasts in the baking dish. Bake in a preheated oven at 400°F (200°C) for about 20–25 minutes, or until the chicken reaches an internal temperature of 165°F (74°C). The sauce should bubble gently around the edges.
Once done, remove from the oven and let the chicken rest for a few minutes. Sprinkle fresh parsley on top before serving. The sauce thickens slightly as it cools — perfect for spooning over mashed potatoes, rice, or pasta.