Chet Hanks Eric Andre

Chet Hanks isn't ready to make peace with comedian Eric Andre ... confronting the dude in a wild interaction over the weekend at a convention in Los Angeles ... and it's all on video.

Chet posted footage of the heated exchange on social media ... which shows him walking up to Eric at ComplexCon and grabbing him by the shoulder.

At first, Eric looks happy to see him -- or at least does a pretty convincing impression -- but Chet isn't there for a friendly catch-up.