Well, here we are: day four. I have eaten just about every kind of pizza allowed by the rules of the challenge (leave suggestions if you have one you think would work). I have had a few different kinds of traditional, pizzeria pizza and some "fake" pizza from Dominos and Papa John's. Even though I feel like it just falls in with the imitation pizza, I guess there's still Pizza Hut.
*For the record: frozen pizzas and pizza bagels have been ruled out by the challenger.