Sautee' onions and celery in oil over medium heat until tender.
Add chicken and sprinkle with Ranch dressing mix. Stir to coat chicken.
Add okra, carrots, potatoes (optional) and enough stock to cover ingredients.
Bring to a boil. Reduce heat and simmer (covered) 10-15 minutes or until okra and carrots are tender.
Add corn, green beans, tomatoes, salt and pepper and remaining stock.
Bring to a boil and then reduce to low and simmer 10 minutes.