Looking on the internet deeply has found these results:

Jet lagged is the most popular phrase on the web.

Jet legged 19,330 results on the web	Jet lagged 1534,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	So, anyhow, I am super jet I'm just a little jet lagged. lagged and I don't want to fall asleep. I'm jet lagged, and he was quite fussy. I'm still kind of jet She was jet lagged.

Jet legged

19,330 results on the web

Jet lagged

1534,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.