Boil fryers. Bone and cut up in sm. pcs. Save 1 litre of broth; strain. Add cut up bell pepper, onion and celery to strained broth. Cook until done. Add pimiento, soup and spaghetti. Cook in broth until done. Spread 1 layer of spaghetti in bottom of casserole, next a layer of cheese and a layer of chicken. Repeat layers until mixture is used up. Bake at 180ºC . for abt. 25 min., or until hot & bubbly.