Las Vegas — Potbelly Sandwich Shop has signed a franchise agreement to open 10 shops in the Las Vegas market. Eric Persson, an experienced, multi-brand restaurant operator and owner, will be bringing Potbelly to the area. The deal marks the brand’s entry into the region. “I’m thrilled to break into the fast-casual restaurant segment with a proven brand,” says Persson, who is a longtime local Las Vegas resident and an accomplished entrepreneur. “Potbelly hits the mark on exactly what I am seeking to diversify my portfolio. I’m excited to help …