We just chatted with Gene Wu, owner of Xi'an cult hit Gene's Flatbread Cafe. He's a busy guy lately: He's juggling operations and pulling noodles at his Chelmsford shop, and he's prepping his Boston location to open next week. (I profiled the tiny restaurant last year and gained about five pounds in the process.) Wu tells me that he's hoping to open early next week at 86 Bedford St., in the old Burritos Express space. He'll be open from 11 a.m. until 4 p.m., serving lunch only. He'll use the same authentic menu as in Chelmsford, and he's in the process of training his staff to make his signature Xi'an chilled noodles in tingly broth and lamb stew. Another lunchtime hit: incredibly juicy beef or pork flatbread sandwiches. They're just $4 each. Timid diners can seek solace with spring rolls and crab rangoon. But really: Here, dining adventurously is the best way to go. Stay tuned for an official opening date.