I've eaten here all through undergrad and grad school. I am in love with their deep dish pizzas; they're on the pricier side but are simply delicious and are large enough that the small will be enough to last me for 3 meals. I also used to buy a large regular pizza and would have enough to reheat (this pizza reheats remarkably well in a toaster oven) for days afterward; Little Nippers has seen me through more finals than I want to remember!
I've also had the steak salads here that are served in the 'Pittsburgh' style (i.e. loaded with fries and cheese on top) and am a fan. It is a bit pricier than the other pizza shops in the area that cater to the students but it is definitely worth it.