Brown meat, add celery and 3/4 cup of onions; saute until just tender. Drain off excess fat. Add chili and pepper and stir over heat. Place a layer of chips in an ungreased 1-1/2 quart casserole. Alternate layers of chili mixture, chips, and cheese, reserving 1/2 cup chips and 1/4 cup cheese for trim. Sprinkle center with remaining cheese and onions. Cover and bake at 350~ for 10 minutes or until piping hot. To serve, border casserole with corn chips.