Bb.q Chicken, a Seoul, Korea-based fried chicken chain that opened its first Colorado location last month in Aurora, will add two locations to the state by year’s end.

“It took a year to open in Colorado and though there were many hardships during the process, it was all worth it because the love and excitement we received from the customers during the opening week was tremendous,” franchisee Juhyung Park said in a company press release.

The chain, which has a robot server, will enter Delaware and Oklahoma by mid-summer, ending the year with 140 U.S. units. Although it opened in 1995 in Korea, it entered the U.S market in 2006 and has 3,500 locations in 57 countries.