Kris Humphries — BOOED by 20,000 Knicks Fans

Kris Humphries has developed some thick skin since Kim Kardashian filed for divorce — because he barely batted an eye at Madison Square Garden tonight … when the entire stadium erupted in a chorus of boos.

You gotta see the clip — Kris subs in … and the disapproval from tens of thousands of Knicks fans is DEAFENING.

It’s Kris’ first game back after he re-signed with the Nets this week — a one-year contract worth a reported $8 million. Who needs Kardashian money now?