In a large pot over medium heat, brown the sliced chicken andouille sausage for 3-4 minutes until crisp, then remove and set aside.
Add avocado oil and cassava flour to the same pot, whisking constantly for 5-7 minutes to create a smooth, copper-colored roux.
Stir in the diced onion, bell pepper, and celery, sautéing until the vegetables are softened and fragrant.
Add the minced garlic, smoked paprika, thyme, cayenne, salt, and black pepper, stirring for 1 minute to toast the spices.
Slowly pour in the chicken broth while whisking to incorporate the roux, then bring to a gentle simmer for 10 minutes.
Fold in the sliced okra and raw shrimp, cooking for 3-5 minutes until the shrimp are pink and opaque.
Return the browned sausage to the pot and stir to combine.
Serve the gumbo in a bowl over a small mound of cooked brown rice and garnish with fresh chopped parsley.