⅓ cup panko (Japanese bread crumbs) or regular dry bread crumbs
Preheat the oven to 400 degrees F (200 degrees C). Line a baking sheet with aluminum foil. Spray foil with a light coating of cooking spray, and place salmon on top.
Mix feta, mayonnaise, cream cheese, Dijon, onion powder, vinegar, garlic powder, salt, pepper, and paprika together in a bowl until smooth. Spread mixture over salmon, then sprinkle bread crumbs over top, covering completely.
Bake in the preheated oven until fish flakes easily with a fork, 35 to 45 minutes.