Fans swarmed a Chicago barbecue joint Tuesday after musical group the Jonas Brothers were spotted eating lunch ahead of their performances in the city this week.

The trio went to Bub City in the Loop for lunch on the patio. Joe and Kevin ordered the Meat & Three lunch option with barbecue chicken and no bun. The table had chicken nachos, buffalo tots and Brussels sprouts salad. Nick had an unsweetened iced tea, according to Laura Isabella, a restaurant representative. They did not order dessert.

The group took several photos and signed autographs with more than 20 fans after their meal. They were also followed by mobs of admirers on their way out of the restaurant. They were joined by two friends and three security guards, said Isabella.

Restaurant representatives said the group commented that they may be back this weekend.

The Jonas Brothers are scheduled to perform at the United Center Thursday and Friday evening as part of their “Happiness Begins” Tour.