Preheat the oven to 180°C (356°F).
Place whole wheat tortilla on a baking pan.
Spread a thin layer of tomato sauce.
Slice chicken breast and vegetables thinly.
Place chicken breast, bell pepper, onion, and broccoli on the tortilla.
Sprinkle low-fat mozzarella cheese on top.
Bake in the oven for 10-12 minutes.
Remove the pizza and cut into serving pieces.