This company's cookeries are putting a West Coast twist on an old favorite. California Pizza Kitchen (CPK) operates a chain of about 265 casual-dining restaurants that specialize in gourmet pizzas featuring unique topping combinations, including duck, barbecued chicken, and grilled shrimp. The chain also serves Neapolitan pizzas from Italy, as well as American-style pies. CPK rounds out its menu with pastas, soups, salads, and desserts. More than 250 of the restaurants are company-owned. Private equity firm Golden Gate Capital acquired CPK in 2011.