I got "pie" from a friend growing up in Arkansas, but his mom was from Connecticut. Little Caesar's, back in the late 80s, had square pizzas. The cook would write the symbol "pi-R-squared" (I can't make the symbols, here) on the box.
Anyway, Austin is a decent college town, so there should be plenty of pizza places that will deliver. I think we can get away with picking one from a list of, say, 5 recommendations from a local (or student, there), and, say, 10 each of five different pizzas for a good variety. Not sure if we need to accommodate vegetarian/vegan diets, nevermind the dizzying array of food allergies that we've succumbed to here in the states...