Heat oven to 350 degrees. Spray 2 quart casserole with cooking spray. In casserole, stir chicken, rice, tomatoes, soup, corn, chiles, taco seasoning mix and 1 cup of the cheese until well mixed.
Cover and bake about 1 hour or until rice is tender and mixture is heated through. Top with tortilla chips; sprinkle with remaining 1/2 cup cheese. Bake about 10 minutes longer or until filling is bubbly and cheese is melted.