There is a currently running targeted ad campaign for 10 tenders for $10 on Facebook and Instagram (screenshot if the link doesn’t work). I hacked a link to get the deal even if you’re not targeted. Note that this completely skips the targeted nature of this deal – using this deal without being targeted could be considered unethical.
The deal link only works on a phone with the KFC app installed.
As this is meant to be targeted, there is no official kfcau.app.link URL for this offer.