UFood Restaurant Group Inc., a Boston-based franchise company that operates casual restaurants under the UFood Grill nameplate, said Wednesday that George Naddaff, a restaurant entrepreneur perhaps best known for helping to develop the Boston Chicken chain many years ago, has resigned as UFood’s chairman and chief executive.

The company’s board of directors announced that it has elected Richard Golden, who has served on UFood’s board of directors for the past three years, as the company’s new chairman and chief executive, UFood said in a press release.