Preheat the oven to 400° F.
Place the salmon fillets in a large baking dish. Drizzle olive oil and season each fillet with salt and pepper.
Place the baking dish in the oven and bake for 15 to 20 minutes or until the salmon is cooked through. Spoon chimichurri sauce over the salmon fillets and serve.
Place the rest of the chimichurri in a serving bowl and leave on the table with the salmon to be used as a topping, if desired.