Shake Shack is finally rolling out its fried chicken sandwich to locations nationwide.

The chain famous for its burgers first began testing the “ChickenShack” at its three Brooklyn locations last summer. The new offering to an otherwise beef-heavy menu was well-received, and now it’s being extended to more areas.

Shake Shack (SHAK) has 49 locations across the country, and as of Wednesday the fried chicken sandwich—rebranded as the Chick’n Shack—will be available at all of them excluding JFK, stadium, and NYC Theater District shacks. According to a press release, it will be available at the Theater District locale soon after the nationwide launch.

“It wasn’t until we found the chicken sandwich to be as flavorful as our ShackBurger that we knew we’d crafted something special that had earned its place on the menu,” Shake Shack culinary director Mark Rosati said in the press release. He told Eater that although it was an immediate hit, the restaurant had to work on sourcing, logistics, and training before it could expand the offering.

Now that the Chick’n Shack is widely available, it could prove to be fierce competition for Chick-fil-A, which has more than 1,900 locations nationwide. The latter’s fried chicken sandwich is cheaper, going for between $3 and $5, depending on the location. While the Chick’n Shack clocks in at $6.29 a pop, it’s made from poultry that’s both cage- and antibiotic-free.

Correction: An earlier version of this story incorrectly stated that Shake Shack has 2,000 locations nationwide. The chain has 49 U.S. locations.