In a very large skillet, brown chicken on all sides in hot oil over medium heat about 10 minutes, turning occasionally. Remove chicken from skillet and set aside; discard drippings in skillet. Add beans, undrained tomatoes, tomato juice, corn, uncooked rice, the remaining 1/2 teaspoon chili powder, the cayenne pepper, and garlic to the skillet. Bring to boiling. Transfer rice mixture to a 13x9x2-inch baking dish or 3-quart rectangular casserole. Arrange chicken pieces on top of rice mixture.