Keep the cheese and sauce light, don't use white bread flour for the dough, and toppings? I love using raw ingredients after it's come out of the oven, like avocado, pears, pineapple, shredded lettuce, tomato, grilled onions, walnuts, pecans. The more raw ingredients you put on (without piling so high you can't stuff it in your mouth! well maybe!), the more filling and healthy it is. You will eat less slices because you are satisfied. Also, you can mix up a salad with lettuce, tomato, and whatever else, add a little of your fav dressing like ranch, thousand, even mayo, then pile the salad on top of the pizza. It's soooooo good. California Pizza Kitchen makes millions doing it.