Aliso Viejo-based American diner chain Johnny Rockets Restaurant Group Inc. said it hired Chief Development Officer James Walker to handle domestic franchising for the chain.

Walker joins Johnny Rockets from Fresh Enterprises LLC, owner of Baja Fresh, where he served in the same position.

Last year, Johnny Rockets appointed Steve Devine, who previously handled domestic franchise sales, to lead the company's new international franchising division.

Johnny Rockets was sold in June to affiliate of Sun Capital Partners Inc. in Boca Raton, Fla. on undisclosed terms and counts more than 300 restaurants.