Mazzio's Corporation, earlier known as Ken s Pizza, is a privately held company that operates more than 230 restaurants in the Midwest and Southeast. Headquartered in Tulsa, Okla., the company has been in the restaurant business since 1961. It operates several Mazzio s Italian Eatery locations that offer dine-in, carryout and delivery services. Mazzio's Corporation also operates various Zio's Italian Kitchen locations that serve a variety of appetizers, homemade soups, calzones, sandwiches, desserts and specialty drinks. Zio's Italian Kitchen restaurants specialize in preparing grilled salmon and saut ed chicken breasts. Additionally, Mazzio's Corporation offers an array of catering services for groups of more than 800 people. The company also supports community projects and delivers meals to nonprofit organizations.