Season 4 Ep 1...I'm worried

New to this show and have been really enjoying it. Even the "bad" episodes have gags that made me laugh. But S4E1 was the worst one I've seen by far. Not even a smile from me. Plus David seems to be taking his very unique "david-isms" (cocked head, crooked smile, awkward mannerisms, etc) to the extreme. It's getting hard to believe him.

I just want to be sure it's a fluke or that they didn't have some huge showrunner(s) change.