AnswerSure ... Vegetarians do this frequently. Also can cut the fat content down by ordering pizza with thinnest crust - less dough for oil to be absorbed into.
Edit* I'm a vegetarian. Dabbing off the oil will cut about 4.5 g of fat and 40 calories per slice if it had some form of meat and lots of cheese. This varies basend on toppings.
If you are concerned about the fat content of the pizza, you shouldn't be eating it. Try a different variety like 'farmer's market', 'vegetarian' or 'Mediterranean' style pizza in stead. They trade out the heavy cheese with lighter and more flavorful cheese and leave off the meat that rendered all that fat to begin with.