1. Brown ground beef in a large skillet; drain. Add seasoning, tomato sauce, and beans. Cook, stirring frequently until mixture comes to a boil.
2. Place chips on a large flat baking pan (with a rim). Spoon chili mixture over chips and sprinkle with cheeses.
3. Broil for 2 to 3 minutes, or until cheese is melted. Garnish with chopped green oinons, sliced black olives, and sour cream, if desired. Serve immediately.