1. Crush tortilla chips and form the first layer in a baking dish.
2. Brown ground beef. Add tomatoes, onion, peppers, garlic, and all seasonings and simmer for 20 minutes.
3. Add beans and simmer until most of the liquid has evaporated.
4. Use the meat and bean mixture to form second layer. Sprinkle with cheese. Then sprinkle black olives and bake for about 30 minutes at 350 degrees.
5. Once casserole has cooled, sprinkle green onions over top and serve.