Based on the pictures alone, the chicken doesn't look too different from what you get at this place, which has 4.5 Yelp stars in a place where that is relatively hard to achieve (and is pretty darn good IMO).

https://www.whatthecluckus.com/

Maybe what was missing was a tasty sauce.

Again, the chicken may have tasted terrible -- I have no idea -- but I'm just not getting why everyone thinks the photos look so bad.