In a large bowl or two gallon-sized zip-top bags, put brine herbs and spices in. Pour buttermilk into the bowl and whisk up to mix buttermilk and seasoning together. Add chicken pieces and make sure each piece is submerged in the buttermilk. Refrigerate at least 4 hours, overnight most prefered. You can brine the chicken to up to 24 hours.

When you're ready to start frying, begin bringing a 6 quart enamel cast iron dutch oven (or any other large, heavy bottom pot) filled half-way with vegetable oil to temperature. Use a candy/oil thermometer to bring oil to 325 degrees F. When you place the stem of a wooden spoon in the oil, it should start to bubble around it. That's when you know it's ready. This is a good way to test the oil temperature if you don't have a thermometer.

Preheat oven to 200 degrees F.

While oil is coming to temp, in a large bowl whisk together flour, cornstarch, baking powder, and spices and herbs. Splash a bit of brine, about 4 tbsp, into the flour.

Take each piece of chicken out of the brine and coat well in the flour mixture. Let rest on a plate, repeat until each piece is coated in flour. Let rest for 5 minutes, then dip each piece back into the flour mixture and let rest again for 5-10 minutes.

Have a wire rack over a baking sheet prepared on a counter next to your range. Fry your chicken pieces, 2-4 pieces at a time, for about 20-22 minutes. When batch is done, place on prepared wire rack over the baking sheet and put into the warm oven. This will keep the batches warm while you finish frying. Repeat this step until complete.

Serve immediately.