On the first Top 7 night, Allen chose to sing the Oscar-winning song from the indie film Once. While Randy Jackson described it as “pitchy from note one”, Kara DioGuardi declared it “one of your best moments ever.” Due to time constraints, Paula Abdul and Cowell did not comment, but on the following night’s results show, Cowell stated “Kris, you were brilliant.” Allen subsequently received a signed record and other gifts from the original artists, Glen Hansard and Markéta Irglová. On the second Top 7 show, Allen brought back the guitar for the fourth time and performed an original, acoustic version of “She Works Hard for the Money”, complete with bongo drums and the band on stage. This earned praise from all four judges, with Abdul remarking “There aren’t many men who are willing to shop in the women’s department. You shopped and found a perfect fit.” For his second Top 3 performance, Allen impressed the judges with an acoustic arrangement of Kanye West’s “Heartless”, prompting Jackson to state that he preferred it to West’s original and The Fray’s cover version. Cowell agreed and said, “I had written you out of the competition but that has changed after that performance.” This performance helped Kris move on to the finals and win.

After being voted into the Top 3, Allen returned home to Arkansas and his hometown to film the material for the next two American Idol episodes. Allen’s homecoming parade was greeted by a crowd estimated to be greater than 20,000. Allen performed at three concerts in Little Rock and Conway, Arkansas, playing many of his popular songs during the competition, including “Man in the Mirror”, “Ain’t No Sunshine”, “Falling Slowly” and “She Works Hard for the Money” at the venues, as well as “Come Together” at the studio of local Fox affiliate KLRT-TV. He accompanied himself on all of these songs with his guitar.