Blac Chyna's Mom: I Want Rob To Be My Son In Law!!!

Rob Kardashian and Blac Chyna are one step closer to hearing wedding bells -- because Rob just met the parents and we're told they LOVE him.

Sources close to the situation tell TMZ Chyna's mom, Tokyo, flew out to L.A. earlier this week so Tokyo's husband could meet his grandson King, and the two of them could meet their maybe, possibly soon-to-be son-in-law, Rob.

We're told Tokyo thinks he's "the one" and is a WAY better match for her daughter than Tyga ever was. She loves Rob's positive attitude, kindness, good manners and sees he treats Chyna like a queen.

The couple has been getting to know Rob while grilling and chilling at Chyna's house where they're staying during the visit.