We got Miz and his beautiful wife, Maryse, leaving Il Pastio in L.A. the other night ... and had to ask about Ronda -- who's been rampin' up her ring work on "Monday Night Raw."

The A-Lister gave Rousey 2 thumbs up ... but warned that body-slammin' her superiors (including one through a damn table) ain't gonna end well for her.

"I think she's messing with the wrong people in Triple H and Stephanie McMahon," Miz told TMZ Sports.

We know -- you think Miz is hammin' it up for his character, right??

Watch Ronda woman-handle Steph ... then get back to us.