Rinse the shrimp thoroughly and pat dry.
Julienne the onion and bell pepper.
Evenly spread tomato sauce over the tortilla.
Place the prepared vegetables and shrimp on top.
Sprinkle mozzarella cheese.
Place the tortilla in a pan, cover with a lid, and cook on low heat.
Once the cheese is melted and the ingredients are cooked, cut into bite-sized pieces.