Wife and I were there Sunday night and ordered 2 cheese slices. What came out of the oven were obviously 2 way over-reheated slices. It looks like they added some fresh cheese before popping it back in to reheat, but the slices were burnt and and dried out. One bite was enough for my wife, who went to complain to the manager (franchise owner?). Rather than try to make it right (what can we do? etc), the response was a simple and rude "I don't care. I made it fresh for you. Do whatever you want with them"). So we left our almost totally uneaten slices on the table and walked out.
I know others have complained in the past about them, so just add us to the chorus.
Big Mama's & Papa's Pizzeria
5219 Lankershim Blvd, North Hollywood, CA 91601