Rob Kardashian My Fam's Gushing Over My Engagement

4/13/2016 6:56 AM PDT

Rob Kardashian is pooh-poohing stories that his family is upset he's getting hitched to Blac Chyna ... he says it's the opposite.

Rob and Chyna had just left a Century City building after a "business meeting" and beelined it for a gas station convenience store to get some snacks, when the photog asked about the deafening lack of response by the Kardashian klan.

For her part, Chyna scoffed at any notion she's getting tips from Kim K.