Buttermilk Ranch Rosemary Chicken

Given that the entire west coast is on fire, I made this Buttermilk Ranch Rosemary Chicken in my kitchen on a cast-iron skillet instead of grilling it outside. Marinating chicken in buttermilk, which is slightly acidic, tenderizes the meat. The enzymes in buttermilk help to break down the protein in the meat, resulting in tender, juicier chicken. One thing that drives me crazy about buying buttermilk is that it only comes in quart containers! Years ago, they sold it in pints. You can freeze buttermilk. If only I had room in my freezer!