Heat the oven to 350 degrees F. Lightly grease an 11x8x2-inch baking dish.
Stir the chicken and pepper sauce in a large bowl. Stir in the rotini, celery, soup, dressing and 1/2 cup cheese. Spoon the chicken mixture into the baking dish. Sprinkle with the remaining cheese.
Bake for 25 minutes or until the chicken mixture is hot and bubbling and the cheese is melted.