01 - Preheat oven to 350°F.
02 - Season 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 chicken breasts and sear each side for 2 to 3 minutes until lightly golden. Remove and set aside.
04 - In the same skillet, sauté the chopped onion for 2 to 3 minutes until softened. Add garlic and cook for another 30 seconds until fragrant.
05 - Reduce heat to low. Add cream cheese and milk, stirring constantly until smooth and well combined. Stir in 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 oven and bake for 20 to 25 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F.
08 - Remove from oven and garnish with chopped fresh parsley before serving.