28May 2023 Checkers & Rally’s Buy 1 Big Buford or Baconzilla, Get 1 FREE! by Jackie ⋅ Leave a Comment Spread the loveTweet Now through May 29, 2023, Checkers and Rally’s have a buy one, get one free Big Buford or Baconzilla in celebration of National Burger Day! You can redeem the promotion on the Checkers or Rally’s app!