01 - Preheat oven to 375°F.
02 - Pat chicken breasts dry with paper towels and arrange them evenly in a greased 9x13-inch baking dish.
03 - In a medium bowl, blend Caesar dressing, sour cream, garlic powder, salt, and black pepper until homogenous.
04 - Evenly spread the prepared sauce over each chicken breast.
05 - Sprinkle grated parmesan cheese over the sauced chicken.
06 - Bake uncovered for 25 to 30 minutes, or until the internal temperature of the chicken reaches 165°F.
07 - Remove the dish from the oven and let the chicken rest for 5 minutes. Garnish with chopped fresh parsley if desired.
08 - Serve hot with chosen accompaniments.