Place sausage, bell peppers, onions, tomatoes and celery in slow cooker. Top with chicken.
Mix Seasoning Mix, water and red pepper until blended. Pour over chicken. Cover.
Cook 8 hours on LOW or 4 hours on HIGH.
Gently stir in shrimp and rice. Cover. Cook 15 to 20 minutes longer on HIGH or until shrimp turn pink and rice is tender.