In a large deep skillet add cooking oil. I used olive oil. Allow pan to get hot
Dredge the chicken thighs in flour seasoned with sea salt and pepper. Place the chicken in a skillet (or dutch oven) over medium-high heat, skin side down and allow to sear for 3-4 minutes until the chicken gets good color. Turn over the chicken and do the same thing to the other side
Remove the chicken from the pan, and set aside until needed
Add the peppers, onion, celery (holy trinity) and garlic to the oil and saute for 1 minute.
Add the flour to the pan and mix well, the flour and vegetable oil make up the roux. If more oil or flour is needed add it in now.
Turn the heat down to medium and allow the roux to cook and brown for 12-15 minutes, stirring constantly. The roux should turn medium brown. Be careful not to burn the roux, you just want it to cook and get brown.
Add the chicken broth to the roux mixture and mix well, making sure all the roux gets incorporated into the broth.
Add the crushed tomatoes, creole seasoning and Worcestershire sauce to the mixture, stirring until fully combined.
Reduce the heat to low, return the chicken to the pan and simmer, stirring occasionally for 1 hour.
Remove the chicken from the pot and allow to cool.
Add the andouille sausage, okra and chopped parsley to the gumbo. Mix well and simmer the gumbo for 20-30 minutes
Bone the chicken and pull the meat apart. Add the chicken to the gumbo, and simmer for an additional 5 minutes to reheat the chicken.
Serve the chicken gumbo over plain white rice, brown rice or farro.
Garnish with chopped green onions, file powder and enjoy