Mazzio's began as a pizza parlor and is located throughout Oklahoma, Kansas, Texas, Iowa, Missouri, Arkansas, Tennessee, Mississippi, Georgia, and Illinois. The sole Mazzio's in Louisiana, located in Shreveport, closed in the mid-1990s. It was first founded in 1961, when a young school teacher named Ken Selby opened a restaurant named The Pizza Parlor at 3024 East 11th Street in Tulsa, Oklahoma, which is still operating as a Mazzios location today. In 1965, Selby opened a second location at 15th and Sheridan in Tulsa (also still operating as Mazzios) and changed the name to Ken's Pizza. By 1975, there were more than 100 franchise locations in and around Oklahoma. Zio's Italian Kitchen is located in Colorado, Kansas, Oklahoma, Missouri, New Mexico and Texas.