Slice brown onion very thinly. Cut Piman or other pepper thinly, but you only need 6-8 pieces. Cut ham into small strips.
In a small bowl, mix ketchup, mustard, and garlic together to make a sauce. Spread the sauce on the bread, and put cheese on top. Place vegetables and ham over the cheese.
Bake in a toaster oven until cheese is nicely melted and bread is browned.