Who are these people? Well according to Crain's Chicago Business, these are some of the most influential or important people in food in Chicago today.
In order, those pictured above are Rick Bayless, of Frontera and PBS's Mexico One Plate at a Time fame; Larry Levy of Levy Restaurants, which owns Bistro 110, Dos Hermanos, Spiaggia, Cerise, and Eadie's; Rich Melman of Lettuce Entertain You Enterprises, the owner's of Ambria, Vong's, Mon Ami Gabi, Papagus, and countless others; Jack Greenberg, the (former, see comments) CEO of a little $17 billion bistro called McDonald's; Mel Gordon, the chairman of Tootsie Roll Industries; Charlie Trotter, the man behind his eponymous restaurant and a man with a PBS show of his own (The Kitchen Sessions); Arthur Velasquez, the CEO of Mexican food giant Azteca Foods (who for some reason feel the need to play music on their site); William Wrigley, Jr. the chairman of Wrigley Gum, founded in 1911 by another William Wrigley, Jr.; and Betsey Holden, President of global marketing and category development for Kraft Foods and with her $31 billion in receipts last year, probably the only one of the bunch who can look at McDonald's $17 billion and yawn, "Is that all?".
There are more on the list. Check Crain's Chicago Business for more details.
If you're looking for a bad guy/gal on the list, may I nominate Sue Ling Gin? She may look innocuous, but she runs Flying Food Group, LLC. That's right, she's responsible for airplane food.