01 - Place chicken breasts in a large resealable bag or shallow dish. Pour dill pickle juice over chicken, add fresh dill if using. Marinate in refrigerator for at least 1 hour, up to 4 hours for maximum flavor penetration.
02 - Preheat oven to 425°F if baking, or heat ⅓ cup vegetable oil in a large skillet over medium-high heat if frying. Ensure proper temperature before proceeding.
03 - In a shallow bowl, whisk together 2 large eggs and 2 tablespoons milk until fully combined and smooth.
04 - Combine grated Parmesan, panko breadcrumbs, garlic powder, onion powder, paprika, black pepper, and salt in a separate shallow bowl. Mix thoroughly to distribute spices evenly.
05 - Remove chicken from marinade and pat completely dry with paper towels. Excess moisture prevents proper breading adhesion.
06 - Dip each chicken breast into egg mixture, allowing excess to drip off. Dredge thoroughly in Parmesan-panko mixture, pressing firmly to adhere coating on all sides.
07 - For baking: Arrange on parchment-lined baking sheet, spray generously with olive oil. Bake 20-25 minutes at 425°F, flipping halfway, until golden brown and internal temperature reaches 165°F. For frying: Cook in hot oil 4-5 minutes per side until deeply golden and internal temperature reaches 165°F. Drain on paper towels.
08 - Let chicken rest for 5 minutes before serving to allow juices to redistribute. Serve with additional dill pickles or creamy ranch dip if desired.