01 - Heat olive oil and butter in a large skillet over medium heat. Season chicken breasts with salt and pepper on both sides. Place chicken in the skillet and sear for 3 to 4 minutes per side until golden brown. Remove from pan and set aside on a plate.
02 - In the same skillet, add the chopped onion and cook for 2 to 3 minutes until softened and translucent. Add the minced garlic and sauté for 1 additional minute until fragrant.
03 - Add the softened cream cheese, milk, and grated Parmesan to the skillet. Whisk continuously until a smooth, creamy sauce forms. Stir in the dried Italian herbs until evenly incorporated.
04 - Return the seared chicken breasts to the skillet, nestling them into the sauce. Spoon the sauce over the chicken to coat evenly. Reduce heat to low, cover with a lid, and simmer for 15 to 18 minutes until the chicken is cooked through and reaches an internal temperature of 165°F.
05 - Remove from heat and sprinkle with freshly chopped chives or parsley. Serve immediately over rice, pasta, or alongside steamed vegetables.