Place on a baking sheet coated with cooking spray.
Bake at 400 for 25 minutes or until a thermometer registers 16
Cool chicken; shred.
Place oil in a Dutch oven. Weigh or lightly spoon flour into a dry measuring cup; level with a knife.
Add flour to pan, stirring constantly with a whisk. Cook over medium heat 35 to 40 minutes or until very brown, stirring constantly with a flat-bottomed wooden spoon.
Add onion, bell pepper, and celery to pan; saut 5 minutes or until vegetables are tender.
Add sausage and next 3 ingredients (through tomatoes); cook 2 minutes. Gradually add broth, stirring constantly with a whisk. Bring to a boil. Cover, reduce heat, and simmer 30 minutes.
Add chicken; cook 5 minutes.
Add garlic; cook 5 minutes.
Remove from heat; add Worcestershire sauce. Discard bay leaves.