In a large Ziploc bag or in a large bowl, combine the chicken, milk, and pickle juice. Toss to combine, and then refrigerate for at least 15 minutes or up to 24 hours.
Add the eggs to the chicken mixture. Stir to combine.
Place the flour, breadcrumbs, powdered sugar, salt, garlic powder, paprika, baking powder, onion powder, and black pepper in a dish.
Pour oil to a depth of at least 1 ½ inches in a Dutch oven or deep fryer. Heat the oil over high heat until it reaches 360°F.
Remove the chicken from the egg mixture, shaking off any excess. Dredge in the flour mixture, shaking off any excess. Let the chicken pieces dry on wire racks for 5-10 minutes.
Working in batches, fry the chicken until it’s a deep golden brown, about 3 – 3 ½ minutes total (flipping halfway through if it’s not in a deep fryer). Adjust the heat to maintain an oil temperature of 350°F - 360°F. Transfer the chicken to a baking sheet and sprinkle with a little more salt.