Have your butcher cut up and skin chicken or chicken legs, season lightly with Cajun seasonings and set aside. Preheat oven to 325 degrees.
Wash rice and place in casserole or roasting pan with a lid. Stir in carrots, onion, celery, bell pepper and green beans. Dissolve onion soup in 3 1/2 cups of water and stir into rice and veggies. Nestle chicken pieces into rice and cover with a tight fitting lid.
Roast in the center of the oven for 80-90 min. (Check after 60 minutes, adding splashes of water if needed, this depends on the rice and how tightly the lid fits the pan). Turn oven off and let rest in oven until ready to serve 10-30 min. Sprinkle with green onions, if using, and serve with hot sauce.
