KATO KAELIN has already seen the first episode of “American Crime Story: The People v. O.J. Simpson”, and apparently he has nothing better to do than nitpick it to death.

He wrote an article for the “New York Daily News” saying that they got a lot of things, quote, “completely wrong” . . . like how they had the limo that was taking O.J. to the airport parked at the curb, and NOT in the driveway.

They also had three detectives knocking at Kato’s door, when there were four . . . they had him eating a hamburger, but he’d given up red meat 10 years before . . . and they showed him out running with a friend, but he says he always ran alone.

If THESE are the complaints, I guess you can rest assured that the show did a pretty good job keeping things real. I hope he reviews every episode, so we can look forward to things like “They showed me stepping up to the witness stand with my left foot, but I always step up with my RIGHT foot first.” (???)

Speaking of the show, TMZ claims O.J. won’t be able to watch, because it’s on FX and his prison only gets basic cable. And they’re also reporting that AL COWLINGS is threatening to sue if doesn’t like how he’s portrayed. He’s being played by “Cosby Show” superstar Malcolm-Jamal Warner.