My son also on low residue diet, and it is a struggle! He eats pasta, which bread, rice, cold chicken slice, mince and meatballs he can digest well, however cant eat roast chicken for some reason makes him sick! Slow cooked chicken, small pieces he can manage and fish, fish fingers he can also manage, yogurts also. It is hard trying to come up with new things, especially when then find things that dont make them sick, reluctant to try anything new in case he has a reaction!
Good luck x