After careful consideration, going to have to say a massive feast of various fruits, chocolates and fried chicken with chips (chicken salted)
Fried Chicken and chips because well it's delicious but terrible for you, Chocolate because I'm allergic to it and figure eh why not, and fruit because I'm fructose intolerant so again same reason if I'm going to die before i have to deal with the aftermath then eat up!
Tough one... I'd say either a good seafood platter (easy on the battered shit)... a nice thick rib eye cooked rare, with peppercorn sauce and baked potato... or a good roast pork with all the trimmings. And a nice bottle of red.
I think the main trouble would be any of these things prepared by a prison kitchen would defintely not be what I was after. Wonder if they let you choose a restaurant?