Well, if the OP's goals are just to meet people and make friends, the average age of ChicagoGourmets' members shouldn't matter. They're an interesting bunch, and the group is open to all comers -- they'd be delighted to have more young members. However, their events tend to be long, multi-course affairs at high-end restaurants, with wines paired with every course, which may not be everyone's idea of fun, and which brings the price up, part of the reason their regulars tend to be more established types. They also mostly come in couples. Membership is $40.
If the goal is to meet single people in your age group, the
Single Gourmet might be of use. They have a mix of people, but try to seat people with others of their approximate age group. They go to a range of restaurants, and try hard to hit all the hot, new ones big enough to accommodate a crowd. Membership costs $129 for new members, $89 for renewals. (Also, they're focused on introductions, so if you're at all shy, it might be a better way to meet people than -- forgive me for saying so -- LTH events, which in my admittedly limited and awkward experience tend to be more about eating than mingling).
There's also something called
Eight at Eight for youngish singles. You pay $40 plus the cost of your dinner and the club fixes you up with seven other singles -- four of each gender -- for dinner at local restaurant. A host meets and greets and buys the first round of drinks. I'm not sure about the level of food.