Preheat your oven to 400°F (200°C).
Line a baking sheet with parchment paper for easy cleanup.
Place the white fish fillet on the prepared baking sheet. Sprinkle salt and black pepper evenly over the fish.
In a mixing bowl, combine the ground pistachios with a drizzle of extra virgin olive oil until well coated.
Spoon the pistachio mixture over the fish fillet, pressing gently to adhere.
Bake for about 12-15 minutes until the fish is opaque and the crust is golden brown.
Let the fish rest for a few minutes before serving.