Published in Cook's Country magazine, Dec/Jan 2007. You can substitute chorizo or kielbasas for the andouille sausage. Serve over rice. Note: there are several good recipes posted on RecipeZaar for Creole seasoning.
Halve each chicken breast crosswise (or, depending on size, you may want to cut each into 3 pieces.) Pat chicken dry with paper towels and sprinkle with 2 teaspoons Creole seasoning.
Cook sausage in large nonstick skillet over medium-high heat until browned, about 5 minutes. Transfer sausage to paper towel-lined plate, leaving fat in skillet. Cook chicken in sausage fat until browned, about 2 minutes per side. Transfer to plate with sausage.
Add oil, onion, celery, and pepper to now-empty skillet and cook until lightly browned, about 5 minutes. Add garlic and cook until fragrant, about 30 seconds. Stir in flour and remaining teaspoon Creole seasoning and cook until four begins to brown, about 1 minute.
Slowly stir in broth until smooth. Return chicken and sausage to skillet. Cover and simmer until chicken registers 160°F, about 10 minutes. Serve over rice.