Sprinkle your salmon fillets with salt and freshly black pepper on both sides, then sprinkle olive on top of the Salmon. In a large baking dish, sprinkle more olive oil and spread it over entire baking dish. Place you salmon in a preheated oven at 375 degree. baking for about 20 minutes, do not overcook your fish. While fish is cooking, in a medium size bowl mix 1/2 of extra virgin oil, and pepper , red onion, parsley and lemon juice and oregano. Once salmon is cooked, and your ready to serve, spoon this sauce over the salmon. Or about 5 minutes before taking the fish out of the oven, pour the sauce over the salmon and cook for 5 minutes more.