Pein/Nagato: Grilled Fish and Stew.
Konan: Flame-broiled fish.
Deidara: Bakudan, a pun on the actual food (boiled eggs in surimi) and the Japanese word meaning bombs.
Sasori: Doesn't need food.
Hidan: Spare ribs.
Kakuzu: Liver sashimi and Monkfish liver.
Orochimaru: Eggs
Itachi: Cabbage and seaweed onigiri.
Kisame: Shrimp and crab.
Tobi: Unknown but in Episode 99 of Shippuden he appears to like dango.
Zetsu: "chewy" people.
PIZZA
His favorite foods are peanut butter, cereal and pizza. His favorite color is green.
Anything chocolate
he enjoys pizza and french foods, also Italian
noodles and strawberry sauce