Old Chicago is a bit of a mixed bag for me. My girlfriend and I have been here twice and had very different experiences each time.
The first time we came here, we absolutely loved it. We weren't in the typical where do we go to eat predicament and decided to stop at Old Chicago. We loved the fact that they had so many draft beers available and that the staff were very friendly. I got the buffalo chicken sandwich (a special not typically on the menu) and it was amazing. My girlfriend got the pizza and really enjoyed it.
However our second, and most recent, experience left a lot to be desired. Staff were great as always, but the food was simply not great. We got fried pickles for an appetizer and they were cooked so long the pickles turned into mush. I got a large order of wings and they were good, not great. My girlfriend got a salad and was underwhelmed by it as well.
So far our two experiences have averaged out to a kind of "meh" opinion about Old Chicago. Our last experience wasn't great so it's likely we'll take a break from here for a while but I'm sure, with time, we'll be back.