Nick Nolte Called ...
TMZ obtained Katt Williams' mug shot -- taken moments after he was arrested after a stand-off with a tractor driver at a home in Palmdale, CA this weekend.
We broke the story ... Katt was arrested for felony intimidating a witness Saturday afternoon after several women on the property allegedly pelted the tractor driver with rocks.
When the guy tried to leave the property, Katt allegedly blocked the exit with his SUV -- and wouldn't budge ... until cops arrived.
Katt's rep had no comment.