Zooey Deschanel's BF Hospitalized -- It Looks Worse Than It Is ...

Zooey Deschanel played the role of caring girlfriend this week ... when her boyfriend was wheeled out of an L.A. hospital with bandages all over his face ... but don't worry, he's gonna be fine.

The "New Girl" star helped her screenwriter BF Jamie Linden out of his wheelchair and into a waiting Tesla outside of the hospital Tuesday ... sparking concern that something was seriously wrong.

But Zooey's rep tells TMZ it looks worse than it is -- explaining, "Jamie had a very minor and routine sinus procedure done, all is well."

Now we can all breathe easier ... especially Jamie.