When Scott Roberts opened his very first Zaxby’s restaurant, it was just the 17th store in the chain.My, how times have changed.Roberts is one of three partners who opened the Zaxby’s in McMinnville on Monday as the ribbon was cut on what is the chain’s 778th store.“This is the 57th Zaxby’s we’ve opened this year,” said Zaxby’s corporate representative Ginger Redwine, who was in McMinnville for the big day. “We’re also opening one in Oklahoma City today. We’ll be at 800 stores in the next few months.”Roberts, his daughter Brittany Stuckey, and business partner Steven Stembridge are the three co-owners of our Zaxby’s.