Grilled funky vegetable chunks with asparagus between each one.
So they are 'touching'.
Maybe he doesn't like asparagus because it turns his pee a funny color or it smells (it's genetic and only happens to some people). So next conversation, ask him if that is his problem.
Tell him you'd be more than happy to provide another funky vegetable due to his medical condition.
Maybe he's doing it to get your goat, so, serve goat! Goat in a sauce over spinach noodles.
Our family is the total opposite, we all bring food and try new recipes each year for the holidays, the same thing over and over would be boring to us.