Kayaa's issues last night were due to him being hit, pressured, and the pocket consistently collapsing on him early in the game. Mentally he has to leave the place where if the oline is getting handled then he justifiably can't improvise and perform. I believe he starts to blink rapidly when he is physically shook up (l saw this last night and in other games), and begins to pout when his pocket isn't pristine. In short, he may be feeling himself and expecting that he doesn't have to or shouldn't have to deal with adversity where his pocket is concerned. If this is the case, then its a flaw created and nurtured under Golden who also felt that every dynamic must be made perfect in order for him to be expected to succeed.
Kaaya is usually very accurate, when he isn't, its due to pressure and distrust of the oline. His passes being overthrown and sailing high are a tell-tale sign of this.
Richt needs to work on Kaaya's expectation level and remove his expectation of having Tom Brady's pocket. Kaaya doesn't have Brady's pocket but does have Brady's expectation of what his pocket should be. He must be coached towards reality. The oline coach should aim to and expect that the oline perform up to those standards though. Kaaya doesn't have the right to shut down and not perform if the oline is struggling.
Kaaya need to work on his hip fluidity and feet movement inside of the pocket as well (stepping into throws and buying time without actually fleeing the pocket). He needs to know that this a required skill of even a "pocket*passer."
That said, he'll be fine and I believe in him.