Shake Shack, a fast food chain, is making significant changes to rival Chick-fil-A, including accelerating its goal of opening 1,500 company-owned locations and launching a new loyalty program and inspired menu items. The fast-food chain plans to reward frequent diners with points and rewards based on past purchases. The program will be linked to Shake Shack's existing app and personalized for each customer. The company also revealed plans to launch a new pimento cheese menu inspired by the Southern staple. If successful, Shake Shack could increase foot traffic and expand its footprint.