Lightly grease a 9x13 casserole dish with PAM and set aside. In a large rimmed skillet, cook the ground chicken till it is no longer pink. While chicken cooks, stir together both soups, pepper, garlic powder, sour cream, broth and green beans in a mixing bowl and set aside. Add the rice to the skillet with the cooked ground chicken. Stir in the contents of the mixing bowl. Gently pour into a baking dish and spread evenly to make sure the rice is evenly distributed.
Cover with foil and bake 45 minutes. After 45 minutes, remove foil and sprinkle cheese evenly over the top. Top with crunchy onions and bake for an additional 15 minutes.