In a large bowl, mix together the buttermilk, garlic, hot sauce, parsley, dill, chives and lemon juice. Season with salt and freshly ground black pepper.
Season the chicken with salt and freshly ground black pepper, and place in a shallow dish or large disposable plastic bag. Pour about 1/3 of the buttermilk ranch over the chicken pieces then cover the dish with plastic wrap or seal the bag and marinate for 10 minutes or up to an hour in the refrigerator. Reserve the remaining buttermilk dressing in the fridge.