Paleo Shrimp and Sausage Gumbo

Name: Paleo Shrimp and Sausage Gumbo
Ingredients: 2 tablespoons ghee or olive oil; 12 ounces andouille sausage sliced into coins ½-inch thick; 1 red bell pepper diced; 2 ribs celery diced; 1 yellow onion diced; 2 tablespoons Cajun or Creole seasoning; 1 14.5-ounce can diced tomatoes, drained; ? cup chicken stock; 2 bay leaves; 1 pound shrimp peeled if desired; Sea salt; Freshly ground black pepper; Fresh parsley and/or chives for serving