01 - Preheat the oven to 350°F.
02 - Season the chicken breasts evenly with salt, pepper, and half of the Italian herbs.
03 - In a large ovenproof skillet, melt the butter over medium heat. Add the chicken breasts and sear each side for 2–3 minutes until lightly golden. Remove and set aside.
04 - In the same skillet, sauté the chopped onion for 2–3 minutes until softened. Add the minced garlic and cook for another 30 seconds until fragrant.
05 - Reduce the heat to low. Add the cream cheese and milk to the skillet, stirring continuously until smooth and well combined. Stir in the Parmesan cheese and the remaining Italian herbs.
06 - Return the seared chicken breasts to the skillet, turning to coat evenly with the cream cheese sauce.
07 - Transfer the skillet to the preheated oven and bake for 20–25 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F.
08 - Remove from the oven and garnish with chopped fresh parsley before serving.