1. Preheat broiler to high.
2. Place egg whites in a shallow dish. Combine panko, paprika, onion powder, and garlic powder in a shallow dish. Sprinkle fish evenly with pepper and salt. Dip each fillet in egg white, then dredge in panko mixture; place on a broiler pan coated with cooking spray. Broil 4 minutes on each side or until desired degree of doneness.
3. Combine mayonnaise, pickle, lemon juice, and dill. Serve with fish and lemon wedges.
Wine note: This dish requires a wine with acidity to cut through the breading and also to act like a final spritz of lemon. Waterbrook 2008 Pinot Gris from Washington state's Columbia Valley ($12) does all that with a touch of fruit. —Sara Schneider