Dave's attacker, 24-year-old Isaiah Lee, was sentenced Thursday to 270 days in Los Angeles County jail after pleading no contest to a pair of misdemeanor counts -- entering a restricted area during a live event and battery -- according to the Los Angeles City Attorney's Office.
As we reported ... Lee ran onstage in the middle of Dave's May 3 performance at the Hollywood Bowl, evading security and tackling Chappelle to the ground.
It was discovered Lee was carrying a replica gun with a knife blade during the incident ... and L.A. County D.A. George Gascon took a ton of heat for refusing the charge Lee with a felony. Instead, the L.A. City Attorney ultimately charged him with four misdemeanors.