Peter Dante -- who's been in just about every single Adam Sandler movie -- went OFF on an L.A. hostess who denied him service for not wearing a mask ... and it's all on video.
The actor's meltdown started Monday night when he was trying to get a table at Quarters Korean BBQ in L.A.'s Koreatown but was told he wouldn't be served.
In the video, you see a maskless Peter flipping out at the hostess -- who is standing next to a sign that says "No Mask No Entry" -- calling her "garbage" and "c***" before demanding to talk to her boss.
While he's waiting to talk to the manager, Peter gets in the face of another staffer and again refuses to put on a mask.
Eventually, Peter hits the road without further incident ... but folks who were there say the hostess was almost in tears.
TMZ broke the story ... Peter was arrested back in September after allegedly threatening to kill his neighbor over construction noise.
Peter was also thrown out of an L.A. hotel back in 2013 after allegedly making violent threats and hurling racial slurs.
We reached out to Peter's camp about the Korean BBQ incident ... so far, no word back.