First, I think he did great.
Now for your sanity. LOL No, it’s not your imagination. I saw the same. I couldn’t quite figure it out. At first I thought he might have recently had dental work. Then it looked like he night have put on a few pounds. He did smile most of the way through this event, so I am wonder if that was the difference.
Heck, maybe he has false teeth and he recently had his uppers relined. LOL
Wow, you're the second or third person who saw it too!
I knew there was something different with his appearance.