In A Large Bowl, Combine 2 Cups Cheddar Cheese, Monterey Jack Cheese, Chicken, Sour Cream, Soup, Chilies, Onion, Pepper And Salt. Spoon About 1/2 Cup Off Center On Each Tortilla; Roll Up. Place Seam Side Down In A Greased 13-In. X 9-In. X 2-In. Baking Dish. Cover And Bake At 350 Degrees F For 20 Minutes. Uncover; Sprinkle With Remaining Cheddar Cheese. Bake 5 Minutes Longer Or Until Cheese Is Melted. Let Stand For 10 Minutes Before Serving.