Stir in the onions, bell peppers, celery, remaining 1/2 teaspoon of salt, crushed red pepper flakes, cayenne, and bay leaves. Cook, stirring occasionally, until the vegetables are soft and lightly golden, about 5 minutes. Add the remaining 3 tablespoons of the flour and cook, stirring, to cook the flour without browning, 1 to 2 minutes. Add the tomatoes, chicken stock, Worcestershire, and pepper sauce.
Return the chicken to the pot, increase the heat under the sauce to medium-high and bring to a gentle boil. Reduce the heat to medium-low. Simmer uncovered, stirring occasionally, until the chicken is fall-from the bone tender, about 1 1/2 hours. Remove and discard the bay leaves.
Emeril's ESSENCE Creole Seasoning (also referred to as Bayou Blast):
Yield: 2/3 cup
Recipe from "New New Orleans Cooking", by Emeril Lagasse and Jessie Tirsch, published by William Morrow, 1993.