Everywhere, Between Then and Now: UNO expands to over 130 full-service company-owned and franchised casual-themed UNO Pizzeria & Grills with a simple Core Ideology: Irresistible Food & Beverage, Genuine Hospitality, Warm & Inviting Atmosphere, and Fun. Chicago, 1943: Ike Sewell invents the Deep Dish Pizza at the original Pizzeria UNO on the corner of Ohio and Wabash Street.