Posted on March 8, 2018 by WBEZ ChicagoCurious City - 9 Chicago Pizza Mysteries Solved You asked about square slices, where the pepperoni goes, and the origins of the pizza puff. We dish it deep on nine questions you kneaded to know. Attached audio [audio/mpeg]: 20210127122920-get-a-piece-of-this-9-chicago-pizza-mysteries-solved_monica-eng.mp3