Mix paprika, thyme, garlic powder and red pepper in small bowl. Place sausage, onions, bell peppers, celery, tomatoes, chicken broth, bay leaves and 2 tablespoons of the seasoning mixture in slow cooker. Stir to blend well. Top with chicken. Sprinkle with remaining seasoning mixture. Cover.
Cook 8 hours on LOW or 4 hours on HIGH or until chicken is cooked through and vegetables are tender.
Gently stir in rice. Cover. Cook 15 to 20 minutes on HIGH or until rice is tender. Remove bay leaves before serving.