Marion is chock full of traditional pizza chains. And you can have those anywhere. So why not support a local business that is actually really good?
Brooks Uppercrust has more specialty pizzas than I have seen at any other pizza joint. They have everything from a semi-traditional BBQ Chicken Pizza to a semi-crazy Gyro Pizza. A large of any of these specialty pizzas, while somewhat pricey, will easily feed 6 people. So don't be shocked by the $$.
One negative thing about Brooks is the fact that their pizza does not reheat well as leftovers. I think it has something to do with the cheese that they use. While stringy and cheesy fresh out of the oven, it tends to be a bit plastic-y when reheated. Solution? Eat it all and don't take any home! Not too shabby of a solution, if I don't say so myself.
So, if you are looking for pizza that potentially could feed an army (they have a 10 lb. pizza), then go to Brooks Uppercrust. It isn't your typical pizza chain and that's precisely why it's great!