Kristin Chenoweth Threatens Kevin Durant ... Stay In OKC Or I Kick Your Ass!!!

Be careful Kevin Durant ... there's a 4'11" Hollywood star who says if you bolt Oklahoma City in free agency ... she'll KICK THE EVER-LOVING CRAP OUT OF YOU.

The pint-sized enforcer is Kristin Chenoweth ... who's an Oklahoma native and DIE-HARD Thunder fan (peep the lid she's wearing) who we just happened to get out at LAX recently.

We asked Kristin the question Thunder faithfuls have wondered since the Warriors pulled off that shocking comeback victory ... will Durant stay or go?

Check out the clip -- Chenoweth doesn't have any answers to that question ... but she does say what will happen to KD if he flees OKC ... and it's pretty adorably feisty.