I always use Kosher salt in my kitchen! If using table salt, start with half the amount and adjust to taste, as it is much "saltier" by volume.
Instructions
Marinade - 2 hours before cooking
Prepare the chicken for the marinade: Working with one piece at a time, place the chicken on a cutting board, cover with a piece of plastic wrap, and pound to an even ¼-inch thickness using a meat mallet. Cut each piece in half so it fits the buns easier.
Marinade: In a large bowl whisk together the buttermilk, hot sauce and pickle juice. Add the chicken and refrigerate for 2 hours.
Cook the Chicken
Place a large cast iron skillet or Dutch oven over medium-high heat and add in the oil. You will need the oil to be about 1 inch deep. Heat to 350°F.
While the oil is heating up, pour ½ cup of the marinade into a bowl and whisk in the egg to make an egg wash.
In a separate bowl whisk together the flour, baking powder, cornstarch and seasonings. Now drizzle about ½ cup of the marinade in the flour mixture and mix it around with a fork to create little clumps.
Dip each piece of the chicken into the egg wash, letting the excess drip off before pressing it firmly into the flour mixture, coating both sides well.
Fry the chicken until golden brown and fully cooked through, then transfer to a wire rack or paper towel lined plate to drain. Immediately top each piece with a slice of pepperjack when it comes out of the oil.
Assemble the sandwiches: To assemble, spread a little mayo (if desired) on the bun, add pickles, then the fried chicken, lettuce, tomato and the top bun. Enjoy!