Shake Shack is bringing Los Angeles to Madison Square Park Friday -- in the form of a chicken sandwich.

The iconic burger chain is teaming up with Los Angeles restaurant Son of a Gun to serve the Son of a Gun Chick’n Shack, a re-imagining of the California restaurant’s famous chicken sandwich. The Shake Shack version will feature a crispy chicken breast with spicy bread, butter pickle slaw and rooster aioli, all served atop a potato roll for $6.49.

It’s the continuation of a friendly partnership between the two restaurants; before Shake Shack opened its first Los Angeles location earlier this year, Son of a Gun chefs Jon Shook and Vinny Dotolo hosted the burger chain for a pop-up event.

“Now we get to flip the script and bring one of their classic dishes, slightly re-imagined, to NYC,” Mark Rosati, culinary director at Shake Shack, said in a statement.

It’ll be an opportunity to try some well-regarded Left Coast cuisine: Shook and Dotolo have racked up numerous awards, including a jointly won James Beard Award in May for best chef West.

The Son of a Gun Chick’n Shack will be available at the chain’s flagship location in Madison Square Park only for the day, and only as long as supplies last.