In a large bowl, combine the tomatoes, half of the onions, chilies and jalapeno pepper.
Place in a greased 8-in.square baking dish.
Break eggs carefully on top.
Sprinkle with salt and pepper.
Cover with cheese and olives.
Bake, uncovered, at 400° for 15-20 minutes or until the eggs are set.
Sprinkle with remaining onions.