In a large mixing bowl, whisk together the buttermilk and mayonnaise until smooth and well combined.
To the buttermilk and mayonnaise mixture, add the chopped chives, kosher salt, garlic powder, onion powder, dried parsley, dried basil, and black pepper. Stir until all the ingredients are well incorporated.
Fold in the shredded chicken breast into the dressing, mixing gently to ensure every piece of chicken is coated.
Cover the bowl with plastic wrap or transfer the salad to a storage container and refrigerate for at least 30 minutes before serving.
