Christopher Koch -- New Era Cap's CEO -- is accused of trying to run over his girlfriend's ex-husband in a crazy dispute outside of a Buffalo restaurant on Saturday night.
Erie County District Attorney John Flynn spelled out the allegations against Koch on Monday ... saying the incident began after Koch's GF's ex got into a dispute with Koch in a parking lot.
According to Flynn, at one point during the argument, the man got out of his car ... while Koch remained inside of his.