01 - Preheat oven to 375°F (190°C) to ensure proper cooking temperature.
02 - Pat chicken breasts dry with paper towels and arrange in a greased 9x13-inch baking dish.
03 - In a mixing bowl, combine creamy Caesar dressing, sour cream, garlic powder, salt, and pepper until smooth.
04 - Evenly spread prepared sauce over the chicken breasts to coat completely.
05 - Sprinkle grated parmesan cheese uniformly over the sauced chicken.
06 - Bake uncovered for 25–30 minutes, or until chicken reaches an internal temperature of 165°F (74°C) and juices run clear.
07 - Remove from oven and let the dish rest for 5 minutes. Garnish with chopped parsley if desired.
08 - Serve hot with preferred accompaniments.