Sparked Kenny Lattimore Sales Boom

R&B star Kenny Lattimore says his music sales SKYROCKETED thanks to that memorable scene from "The Last Dance" featuring Michael Jordan rocking out to his songs more than 20 years ago!

In other words, THE MJ EFFECT IS REAL, YO!

You remember the scene ... MJ was on the Chicago Bulls team bus, on the way to Game 1 of the 1998 NBA Finals, when someone asked what he was listening to on his headphones.

Jordan bragged he had some unreleased Kenny Lattimore tracks -- and seemed to really dig it.

So, when we saw Lattimore at LAX the other day, we had to ask if the cameo in the docu-series spiked a surge in music sales.

And, man ... THEY DID.

"The Michael Jordan effect is definitely real!!!" Kenny said.

"Th…