The Top Chef bus is rolling into town tomorrow for a two-day Chicago visit as it makes its way back to Los Angeles. Season Four’s Antonia Lofaso and Season Five’s Radhika Desai will be on hand to do a few cooking demonstrations. The event is free, and if you didn’t pre-register, you might want to show up early, as there will be some tickets available. The chefs will be doing three cooking demos at the south end of Lincoln Park on both Saturday and Sunday at 10:30 a.m., 12 p.m., and 1:30 p.m. [The Stew]