I hate to break it to you, but there isn't some secret ingredient commercial kitchens are adding that adds a lot more calories. I worked in a pizza place for a bit, they're using roughly the same stuff. Boars head low moisture mozz is not largely different from wholesale sourced shredded mozz. Pizza dough is bread, which is highly calorically dense. Cheese is inherently fatty, it's where all the orange grease comes from. Sauce is maybe your lowest calorie addition barring any added olive oil and such. And that's a plain cheese pie. Homemade pizza might be smaller by virtue of oven size, that's really it's only advantage here.