A Main Line pizza chain with only two locations in the Philadelphia region is already expanding to another state. The BYOB concept Snap Custom Pizza first opened in Ardmore, Pa., and a second location opened last month in Exton, Pa., each replacing the Peace of Pizza restaurant concept. Both concepts are owned by Aaron Nocks and Pete Howey. A third location is planned for Center City when, in February, the 500 Degrees restaurant at 1504 Sansom St. will be converted into an outpost of the pizza...