It’s not delivery, but the Beecher’s sandwich shop in SEA does mobile order; I’ve become an expert at ordering my breakfast sandwich at exactly the right place in the TSA process to show up and claim my sandwich when it comes off the grill.
I concur with others that the lack of visibility and control in a gate delivery model doesn’t hold much appeal. Also, my goal is to spend zero time in the gate area; call me when I can pick up food from a cart at the entrance when exiting the SkyClub
