Wash the sweet pumpkin thoroughly, remove the seeds, and slice thinly.
Slice vegetables like onion and bell pepper into bite-sized pieces.
Place the pumpkin slices in a pan instead of pizza dough.
Spread tomato sauce and cheese on top of the pumpkin.
Add the prepared vegetables and any desired toppings.
Cover with a lid and cook on low heat until the cheese melts.
Slice the finished pizza into pieces for serving.