Heat Oven to 350 Degrees. Spray 13x9 baking dish with cooking spray. Pick meat from rotisserie chicken and cut into cubes. place into a medium bowl and add buffalo wing sauce. Stir. In a large bowl, combine potatoes, dressing, cheese and soup. Add chicken mixture and combine well. Spoon into a baking dish and sprinkle with shredded cheddar cheese. In a small bowl, stir together corn flake crumbs and melted butter. Sprinkle in baking dish. Bake uncovered for 20-30 minutes or until heated through and bubbly. Sprinkle with green onion chives and serve.