Mix salmon and egg. Add finely diced onion and green pepper, tomatoes, butter, 1/2 cup bread crumbs, parsley, salt, pepper, and chili powder. Simmer slowly in sauce pan 10 to 15 minutes. Turn into buttered casserole or individual dishes. Cover with remaining bread crumbs and bake in a moderate oven, 375 until crumbs are brown. Top with cheese.