Preheat oven to 350°F and grease a 9x13 baking dish.
Spread the uncooked rice evenly on the bottom of the dish.
In a bowl, whisk together cream of chicken soup, cream of mushroom soup, chicken broth, milk, onion, garlic powder, paprika, salt, and pepper.
Pour the mixture over the rice and stir gently to combine.
Place chicken breasts on top of the rice mixture.
Dot the chicken with butter, then cover the dish tightly with foil.
Bake for 60 minutes. Remove foil, check that rice is tender, and bake an additional 15 minutes if needed.
Let rest for 5 minutes, garnish with parsley, and serve hot.