Preheat your oven to 375°F (190°C).
Prepare the filling by mixing crab meat, shrimp, cream cheese, breadcrumbs, Dijon mustard, parsley, lemon juice, salt, and pepper in a bowl.
Slice a pocket into each salmon fillet, taking care not to cut all the way through.
Stuff the salmon fillets with the crab and shrimp mixture, pressing gently to fill them evenly.
Place the stuffed salmon fillets in a baking dish, drizzle with olive oil, and season with salt and pepper.
Bake the salmon for 20-25 minutes, or until the salmon is cooked through and flakes easily with a fork.
Remove from the oven and let rest for a few minutes before serving.