In a large stockpot, add 2 quarts water. Add the salt, sugar, onion powder, garlic powder, pepper, and bay leaves. Allow the mixture to come up to a rolling boil. Reduce the heat and simmer for about 10 minutes.
Remove the pot from the heat and pour in remaining 1 quart of water. Transfer the brine into the refrigerator to cool down completely. Once the brine is chilled, place the chicken pieces into a large bowl or container and proceed with the next step.
Pour the brine over the chicken pieces and make sure all of the chicken pieces are fully covered. Transfer the container to the refrigerator and brine the chicken for at least 6 hours. Remove the chicken from the brine and discard the liquid.
In a large bowl, combine the buttermilk, salt, pepper, garlic powder, paprika, and hot sauce together. Add chicken pieces into the buttermilk mixture. Make sure all pieces are in the mixture. Transfer the bowl to the refrigerator for at least 6 hours.
After soaking in the buttermilk mixture, place the chicken pieces into a colander or other vessel to drain the chicken and then discard the buttermilk soak.