The "priority" boarding on budget airlines is already like that and I'd be surprised if there isn't already a "VIP priority" boarding for an extra fee.
Well, I would assume that everyone having premium would mean that the price would need to cover each delivery going only to one person at a time, which does sound sustainable to me.
In the longer term though, I wonder if we could have mobile (robotically operated?) kitchens, optimized to finish preparing the dish just as they're about to arrive at your doorstep.
The "priority" boarding on budget airlines is already like that and I'd be surprised if there isn't already a "VIP priority" boarding for an extra fee.