there is more than one location, 5 locations I believe. This particular location is 130 E Randolph. It used to be Delmonico, which is the exact same setup if you're familiar (they still have a few locations I believe too). When they closed/reopened I wasn't convinced it was just renamed and a different franchise or something, the menu didn't change much if any. Maybe Market Creations was a direct copy of Delmonico, it seems, IDK though.
I'm surprised to hear there's any chef in the back with any specifically known credentials... the front of the house sure doesn't exude that.
The guys who operate the grill seem to be incompetent half the time. Order a burger and fries, they'll make the burger and then as they're handing you the fryless burger ask if you want fries, at which point you have to wait 10 minutes for them to fry fries to some level of soggy that shouldn't be described as fries. Happens nearly every time. There used to be a fairly incompetent person who worked the sandwich line too, now the guy they have is pretty sharp. (I once ordered their "cold cut sandwich" and had to argue that it included any meat on it--the menu specifically listed "cold cuts" as the first ingredients, fbut he didn't know what that meant. He disagreed and gave me a sandwich with artichokes and lettuce on it. Manager nowhere to be found, left the sandwich on the counter.)
I'm the type who actually will report ongoing problems when it's a chronic issue, but I've attempted to call to no avail, and I've e-mailed several times and they never even respond. I don't think they care.