The meat found on your pizza is commonly the processed kind, and those have nothing good in them. Pepperoni, sausage, ham, and bacon are all super high in saturated fat, salt, and nitrates. All of these are linked to obesity, cardiovascular issues, and cancer.
The meats used in pizzas are usually pre-cooked when it arrives at the pizza stores. So these may have been cooked in trans fats or may not be degreased or. Next time you order a pizza, go easy on the meat.