Wash the sweet potato thoroughly, peel it, and slice it thinly.
Grease a pizza pan or oven pan with oil.
Spread the sliced sweet potatoes evenly over the bottom of the pan.
Spread pizza sauce or ketchup over the sweet potatoes.
Top with chopped vegetables such as onion and bell pepper.
Add finely chopped ham or bacon on top.
Generously sprinkle mozzarella cheese.
Bake in a preheated oven at 180°C for 15-20 minutes.