Rob Kardashian: My Fam's Gushing Over My Engagement

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.