Preheat oven to 400°.

In a small bowl, mix together mustard, olive oil and honey.

In another bowl, mix together the bread crumbs, walnuts and parsley.

Season each salmon fillets with salt and pepper.

Place on a baking sheet lined with parchment paper.

Brush salmon with honey mustard mixture.

Cover each fillet with bread crumb mixture.

Bake in a preheated oven for 20 minutes, or until salmon flakes when tested with a fork.

Serve garnished with lemon juice.