Brine the chicken:
Combine the water, seasoning salt, garlic powder, and cayenne in a really big pot or 2-gallon Ziploc bag. Add the chicken, cover, and refrigerate for at least 4 hours and up to 24.
Bread and fry the chicken:
Fill a deep fryer with oil according to the manufacturer's instructions, or just fill a wok or soup pot with the oil, making sure there are at least 4 inches between the oil and the lip of the pot. Heat the oil to 365°F over medium heat. If you don't have a thermometer, set your burner on medium and let your pan of oil heat for around 5 to 10 minutes. You'll know your oil is ready if you drop a small piece of white bread in the oil and it starts to sizzle and turn a lovely toasty golden brown right away.
Combine the flour, seasoning salt, and cayenne in a big bowl. A few at a time, remove the thighs from the brine and toss them in the flour mixture until coated really well, then place on a tray while you coat the rest.
When the oil is ready, turn the heat up to medium-high and carefully slip in the thighs, frying just enough so that there’s still plenty of space between each wing. (If it feels safer, use tongs to add the wings; whatever you do, don’t just drop them in! Splashing hot oil is bad.)
Fry the chicken until golden and crispy, 10 to 12 minutes, per batch. Drain them on plenty of paper towels. Let the oil come back to temperature between batches and fry the rest of the chicken in batches.
Make the pickle mayo:
Combine all ingredients in a bowl and mix well. Season to taste.
Make the waffles:
Combine 3 cups of Cravings Buttermilk Mochi Pancake & Waffle Mix with 1.25 cups of milk, 3 eggs and 6 tbsp of vegetable oil.
Lightly oil and preheat waffle iron. Pour about ⅓ cup batter into waffle iron, leaving enough room for the waffle to expand. Cook for about 3-5 minutes or until golden brown and serve right away.
Assemble sandwiches:
Spread 1 teaspoon mayo on one side of the waffle, layer one piece of fried chicken thigh on top, and top with 1 teaspoon mayo and another waffle.