Preheat oven to 375 degrees.
In a bowl, stir together condensed soup, water, rice, and vegetables and place into a greased 13x9-inch baking dish. Place chicken halves on top of mixture and nestle them in. Season with pepper and garlic powder.
Cover with foil and bake in a preheated oven for 45 minutes. Remove from oven, remove foil, top casserole with cheese, and return to oven, baking until liquids are thickened. (10-15 minutes.) Top with chip or Doritos crumbs and bake an additional 5 minutes until chips are toasted. Makes 8-10 servings. Enjoy!