Dillon Brooks might actually be getting under LeBron James' skin ... 'cause the Lakers superstar got so fed up with being asked about the Grizzlies forward on Friday, he abruptly cut off his media availability.
Of course, Brooks made headlines for ripping the King after Wednesday's win over L.A. ... calling James "old" and saying he doesn't respect his game.
Naturally, the 4-time NBA champ was peppered with questions about his current enemy at practice just minutes ago ... and he was short and to the point with reporters -- claiming he didn't hear a word Brooks said.