Dr. Mehmet Oz finally let his staff indulge in the heart-clogging treats sent to his staff by pal Jimmy Fallon. The late-night talk-show host on Thursday had a platter of ribs, mac and cheese and other BBQ goodies delivered to Oz’s studio to celebrate the last day of taping for season four of “The Dr. Oz Show.” We hear the Oprah Winfrey-endorsed health guru usually gets healthy lunches catered for staffers during tapings at their 30 Rock studios. But sources tell us a trouble-making Fallon, who tapes “Late Night With Jimmy Fallon” down the hall from “Oz”, often sends “non-Dr. Oz approved treats to the staff,” to try to get them in trouble with Oz. The final “Oz” airs in late July.