They're doing it again.
The announced line-ups are:
-Iron Chefs Cat Cora, Marc Forgione, Jose Garces and Michael Symon
-Food show hosts Keegan Gerhard (Food Network Challenge), Jeffrey Saad (United Tastes of America, Cooking Channel), Aarti Sequeira (Aarti Party) and Marcela Valladolid (Mexican Made Easy)
-Food Network Star Season Seven Finalists Justin Balmes, Penny Davidi, Vic "Vegas" Moea and Chris Nirschel
-Chopped judges Alex Guarnaschelli, Marc Murphy, Marcus Samuelsson and Chris Santos