BUSINESS WIRE--California Pizza Kitchen, Inc., home of the Original BBQ Chicken Pizza and other innovative hearth-baked pizzas, made-to-order pastas, creative salads, appetizers, soups, sandwiches and desserts, opened its sixth location in Mexico today. The new restaurant, another opened by CPK franchise partner Grupo Calpik, S.A. de C.V., is the first to open in Guadalajara.