01 - Heat olive oil and butter in a large skillet over medium heat. Season chicken breasts with salt and pepper, then add to the pan. Sear for 3 to 4 minutes per side until golden brown. Remove and set aside.
02 - In the same skillet, add the chopped onions and cook for 2 to 3 minutes until softened. Add the minced garlic and sauté for 1 more minute until fragrant.
03 - Stir in the cream cheese, milk, and Parmesan cheese. Whisk continuously until a smooth, creamy sauce forms. Mix in the dried Italian herbs.
04 - Return the seared chicken breasts to the pan. Spoon the sauce over the chicken, reduce heat to low, cover with a lid, and simmer for 15 to 18 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F.
05 - Sprinkle with fresh chives or parsley before serving.