The Chelsea location of Dallas Barbecue — the giant frozen margarita purveyor and barbecue impostor — is proving to be the worst local chain in all of New York (and maybe America). Less than a month after a gay couple got harassed and assaulted after accidentally knocking over a drink, a 20-year-old woman got clocked in the forehead at the restaurant. The incident occurred two weeks ago at night, but it just became public, and apparently it followed a big fight. Thankfully, the NYPD, which didn’t make any arrests, says she didn’t require any medical attention. If you needed another reason to avoid this restaurant, here it is.