Hissers are very hardy and can live in a variety of setups. You'll definitely want an enclosure with a latchable/ heavy lid and a 2' petroleum jelly barrier around the top; hissers are good at climbing and are very strong so these will help prevent escaping.
As for food they should also have access to protein and a bit of calcium; for this I usefish flakes, cat food, and crushed up egg shells. They can eat a wide variety of foods so it's kinda fun to experiment and see what they like. Mine are big fans of apples, bananas, and bell peppers.