Preheat your oven to 400°F and line a baking sheet with parchment paper.
Position the salmon fillets on the baking sheet with the skin facing down, if there is any. Apply a light coat of Dijon mustard on each fillet and sprinkle with Italian seasoning, salt, and pepper to taste.
In a small bowl, combine the panko breadcrumbs, olive oil, and lemon zest.
Sprinkle the panko mixture evenly on top of each salmon fillet.
Place in the preheated oven and bake for 12 to 15 minutes, or until the salmon flakes easily when tested with a fork.
Let the salmon rest for a few minutes before serving. Sprinkle with fresh parsley.