Preheat oven to 350 degrees.
Spray cooking spray (or lightly wipe olive oil on baking sheet).
Slice zucchini into 1/4" slices and place on baking sheet.
Spread sauce on top of slices.
Top with mozzarella cheese and any other pizza topping you'd like.
Bake until cheese is melted and golden brown, remove and cool.
Enjoy!