It's not a chain at all. There is one Joe's Stone Crab is in Miami and 2 licensed locations, 1 in Chicago (the one being discussed) and 1 in Las Vegas, both run by LEYE.
Just in case, LEYE =
www.leye.com
Which come Nov, LEYE sells $100 gift cards where one gets an additional $25 bonus card. The bonus card isn't able to be used at all LEYE restaurants & has to be used by a certain date, BUT, I've found this a good deal if I'm going to Tru or Everest (or other pricey LEYE restaurant), I was going to spend the $ anyways, so why not get the 25% bonus??!!