UNO’S FAMOUS DEEP-DISH PIZZA Recipe shared by Uno in celebration of the 65th anniversary of Uno’s Chicago-Style Pizza.-Chicago pizza is a not your typical pizza. When Pizzeria Uno founders, Ike Sewell and Ric Riccardo, invented it in 1943, they weren’t trying for true Italian. They believed Chicagoans needed something more substantial: deep dish pizza, which is more a casserole than a flatbread.