Preheat oven to 325 degrees Farenheight. Line a shallow baking pan with parchment paper. Place salmon in prepared pan. Sprinkle with salt and black pepper. Drizzle with olive oil; rub onto salmon. Sprinkle with oregano.
Roast salmon for 25 - 30 minutes or until fish flakes easily.
Remove 1 tsp. zest from lemon. Cut lemon in half; squeeze juice over salmon. Spoon yogurt onto salmon; top with zest and remaining ingredients.