Preheat oven to 425°F. Line two baking sheets with parchment paper and spray lightly with cooking spray.
Toss potato wedges with 1 tablespoon olive oil, paprika, garlic powder, salt, and pepper. Spread on one baking sheet and bake for 25 minutes, flipping halfway through.
Mix panko breadcrumbs with remaining 1 tablespoon olive oil, salt, and pepper in a shallow dish.
Pat cod fillets dry and season with salt and pepper. Dip each fillet in egg whites, then coat thoroughly with panko mixture.
Place coated fish on the second baking sheet and bake for 12-15 minutes until fish flakes easily with a fork and coating is golden brown.
Serve fish and chips hot with lemon wedges and a splash of malt vinegar.