Brown ground beef round and drain. Add onions, green peppers, water and taco seasoning and simmer for 10 minutes.
Spray a 9x9" baking dish with non-stick cooking spray and layer as follows, 1st layer half of the meat mixture, half of the corn, half of the chips, half of the cheese. 2nd layer, meat mixture, corn, chips.
Bake for 30 minutes on 350° F (175° C).
Remove dish and top with remaining cheese. Return to oven and bake until cheese is melted.