Chick-fil-A is launching a sandwich that's like nothing on the menu

Chick-fil-A is launching a new barbecue-flavored sandwich.

The new "Smokehouse BBQ Bacon" sandwich features grilled chicken, Colby-Jack cheese, lettuce, and several ingredients that are brand new to Chick-fil-A including brown-sugar-and-pepper-glazed bacon, a new "Smokehouse BBQ" sauce, and a sweet, Hawaiian-style bun.

The sandwich was created as a seasonal item, like fall's pumpkin spice latte, but in food form for the summer.

"This is the first time we have tried what were are calling a seasonal approach to an entree," David Farmer, Chick-fil-A's vice president of menu strategy and development, told Business Insider. "We wanted to do something different for the summer."

The 500-calorie sandwich will launch on May 22 and remain available until August 19 for a starting price of $5.59. If it's successful, the chain will likely bring it back next summer, he said.

See how Chick-fil-A restaurants have changed over the years:

Chick-fil-A developed the sandwich more than two years ago with Atlanta restaurateur and a James Beard Award-nominated chef Ford Fry.

Farmer says the key ingredient in the sandwich is the "lose-your-mind" bacon that's seasoned with brown sugar and black pepper in restaurants and then roasted in an oven.

The sandwich was tested in several markets in the summer of 2015, including Richmond, Virginia, St. Louis, Missouri, Knoxville Tennessee, and Southwest Florida.

The company waited two years to debut the sandwich nationally because it was focused on marketing the relaunch of its app last summer.

Along with the sandwich, Chick-fil-A will also debut a new watermelon mint lemonade.

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