In a mixing bowl, combine the lemon juice, lemon zest, chopped basil, olive oil, minced garlic, salt, and pepper. Stir well to create a marinade.
Place the salmon fillets in a shallow baking dish and pour the marinade over them, ensuring they are well coated. Let it marinate for at least 15 minutes (you can marinate longer in the refrigerator for deeper flavor).
Once marinated, place the salmon in the oven and bake for 12-15 minutes or until the salmon flakes easily with a fork.
Carefully remove the salmon from the oven and let it rest for a couple of minutes.
Serve the salmon on plates garnished with lemon slices and fresh basil sprigs.