Preheat the oven to 350 degrees F. Prepare the rice according to the package directions. Place the chicken breasts in the bottom of a greased 13x9-inch casserole dish. In a large bowl, combine the rice with all of the remaining ingredients except the cheese. Spoon the rice mixture around the chicken breasts. Sprinkle the cheese on the chicken and rice. Cover and bake for 30 minutes. Remove the cover and cook 15 minutes more, or until the cheese is brown and bubbly and the chicken is cooked through.