In a large bowl, combine coleslaw, red cabbage, carrot, poblano, onion, parsley, bell peppers, and jalapeño.
In a small bowl, whisk together vinegar and remaining ingredients. Pour dressing over cabbage mixture, tossing to coat. Refrigerate for at least 30 minutes before serving.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/tangy-rainbow-slaw/