Preheat the oven to 350°F (175°C).
In a large mixing bowl, combine the uncooked rice, chicken broth, cream of mushroom soup, cream of chicken soup, garlic powder, onion powder, salt, and pepper.
Pour the mixture into a greased 9x13-inch baking dish.
Place the chicken pieces evenly on top of the mixture.
Cover the dish tightly with foil to keep moisture in.
Bake for 1 hour, or until the rice is tender and the chicken is cooked through.
Let rest for 10 minutes after removing from the oven. Garnish with parsley before serving.