wash the salmon fillet and pat dry with paper towels.
Run your finger along the spine of the fillet to check is there's any bones stuck in the fillet. If you feel a small brick with your fingers, find the bone, and use a tweezer to pull out the bone.
Sprinkle salt both sides of the fish and let it sit for 10 minutes.
Meanwhile combine mayonnaise, lemon juice, lemon zest, salt, dill, and pepper in a bowl. Mix well.
Preheat oven to 375°F with the rack in the middle.
Take a baking sheet out and lay a parchment paper on top that fits the fish fillet.
Lay the salmon on top with the skin down.
Generously spread the mayonnaise mixture on top of the fillet. Cover all areas.
Sprinkle the panko over the mayonnaise. Give a quick drizzle of oil on top.
Bake the fish for 25-30 minutes in the oven. Serve with lemon slices and parsley on top.