'Food Network Star,' Season 7, Episode 6, 'Food Truck Face Off': TV Recap. Perhaps it was just our impression, but this week’s installment of "Food Network Star" felt a lot more like an episode of "Iron Chef America." Call it Battle of the Red Onion. In the show’s most explosive moment, contestants Penny Davidi (aka the feisty "Middle Eastern Mama") and Mary Beth Albright (the milder mannered food writer and wannabe celeb chef), went at each other over a bunch of chopped red onions. Mary Beth helped prepare said onions so Penny could get a dish done in time. But Penny downplayed the need for help. Pretty soon, the two were in full catfight mode.