Combine the chicken pieces with pickle juice in a bowl and marinate for 30 minutes in the refrigerator.
Mix the flour, powdered sugar, smoked paprika, garlic powder, and black pepper in a shallow dish.
Drain the chicken and press each piece into the flour mixture until fully coated.
Heat the peanut oil in a deep skillet to 350°F / 175°C.
Fry the chicken nuggets in batches for 3 to 4 minutes per side until golden brown and cooked to 165°F / 74°C.
Drain on paper towels and serve immediately with your favorite dipping sauce.