Pat dry salmon fillets and season with salt and pepper. Place on baking tray and bake for 15-20 minutes or until desired doneness.
While salmon is baking, prepare your toppings. Dice tomatoes, cucumber, bell pepper, onion, olives and feta cheese. Mince garlic. Transfer everything to a large mixing bowl.
Add lemon juice, extra virgin olive oil and oregano. Toss until everything is well combined. Taste and season with salt and pepper if necessary.
When the salmon fillets are done, transfer them to the serving plates. Top each one with the feta mixture. Enjoy!