I always make larger dinners and them freeze them in gladwear for reheating later. If he has access to a microwave then you are in good shape.
Stuffed Peppers
Pepper Steak (Chinese Vegies over rice)
Lasagna
Roast
Sloppy Joes
And the list goes on.. if you can freeze it I would do it
Let me know if you want any of these recipes