Chop the chicken breast into bite-sized pieces and thinly slice the andouille sausage.
Heat the avocado oil in a large heavy-bottomed pot over medium-high heat.
Add the chicken and sausage to the pot, browning them for about 5-6 minutes until they develop a golden crust.
Remove the meat from the pot and set aside, then add the diced onion, celery, and green bell pepper to the remaining oil.
Sauté the vegetables for 5 minutes until softened, then stir in the minced garlic and sliced okra.
Sprinkle in the Cajun seasoning, sea salt, black pepper, and dried thyme, stirring for 1 minute to toast the spices.
Pour in the chicken bone broth and add the bay leaf, scraping any browned bits from the bottom of the pot.
Return the chicken and sausage to the pot, bring the mixture to a boil, then reduce heat and simmer for 15 minutes.
While the gumbo simmers, steam the cauliflower rice and serve the hot gumbo over it.