Boil chicken in 3 qts water. Bone and set aside. Reserve stock.
In heavy Dutch oven, sauté celery, green onions, parsley, and garlic until celery is tender.
In separate non-stick skillet, heat ½ cup oil and ½ cup flour. Stir constantly over medium high heat until mixture is smooth and turns dark brown. Add to Dutch oven.
Add reserved stock, chicken, sausage, okra, tomatoes, and seasoning.
Cook, loosely covered over medium heat 1½-2 hours, skimming fat off top frequently.
Add seafood and filé. Mix well and cook until shrimp is cooked through.
Serve over steamed rice with saltine crackers and extra Tony Chachere's and Tabasco.