Russell Westbrook All Smiles at L.A. Birthday Dinner, Despite Rockets Drama

He may not be happy in Houston, but Russell Westbrook was all smiles in L.A. on Thursday ... where he celebrated his birthday at one of the swankiest spots in town.

Russ turned the big 3-2 on Thursday -- and hit up Delilah with his wife, Nina, and some close pals (No, James Harden wasn't there).

As you may have heard, Westbrook is looking to leave the Houston Rockets ... where he's reportedly unhappy with the team's "accountability and culture," according to The Athletic.

He apparently wants to play for a squad where "he can have a role similar to his prior, floor-general role in Oklahoma City."

So, Westbrook has reportedly made a trade request with just about a month until the 2020-21 NBA season kicks off. Tick tock ...

Westbrook still has 3 years left on his current contract -- which is set to pay him out more than $132 MILLION.