Heat oven to 425ºF. In a large bowl toss the chicken with the cauliflower, cherry tomatoes, potatoes if using, olive oil, Italian seasoning, salt and pepper.
Transfer everything to a rimmed baking sheet; roast until chicken and cauliflower are golden, 40 to 50 minutes.
In a small bowl, combine capers, pine nuts, golden raisins and parsley and sprinkle over chicken to serve.
Notes
*If your meat department doesn't have skinless, simply remove the skin at home with some kitchen shears and pull off with a paper towel.