Richard Johnson - Page Six - A HEAD rolled at 303 Gallery in Chelsea after an employee failed to recognize designer Marc Jacobs . "He's a big art collector and he came in looking scruffy and homeless," said an insider. "A low-level employee was disturbed to see this guy walking around and asked him to leave. [Jacobs] left without a whimper. When the owner, Lisa Spellman, found out, she fired [the clueless staffer] on the spot." Spellman told Page Six that Jacobs has been to the gallery and an employee was fired, but not over Jacobs.