Fried Chicken and Andouille Gumbo

Name: Fried Chicken and Andouille Gumbo
Ingredients: 1 1⁄4 cups plus 2 tbsp. canola oil; 1 (3 1/2–4 lb.) chicken, cut into 8 pieces; 2 1⁄2 tsp. freshly ground black pepper; Kosher salt, to taste; 2 cups flour; 1 1⁄2 tsp. dark chile powder; 1 1⁄2 tsp. filé powder; 1 tsp. cayenne; 1 tsp. ground white pepper; 1 tsp. paprika; 3 cloves garlic, minced; 3 stalks celery, minced; 1 green bell pepper, minced; 1 jalapeño, minced; 1 poblano pepper, minced; 1 yellow onion, minced; 12 cups chicken stock; 1 lb. andouille, halved and sliced; 12 oz. okra, trimmed and sliced 1/2″ thick; Sliced scallions, for garnish; Cooked white rice, for serving