UFC legend B.J. Penn tried to get into a scrap with a strip club DJ before he ultimately got into a street brawl with the bouncer ... this according to 911 calls obtained by TMZ Sports.
Penn was involved in a melee at Club Femme Nu in Honolulu last week ... with the UFC Hall of Famer mounting a man and shoving his elbow into the guy's throat.
Cops were called to the scene ... but since no victim came forward -- Penn was never arrested, and charges haven't been filed.