In a small bowl, whisk together olive oil, lemon juice, maple syrup, garlic powder, onion powder, smoked paprika, dried thyme, salt, and pepper.
Place the salmon fillets in a shallow dish and pour the marinade over them. Let it sit for at least 15 minutes to absorb the flavors.
Line a baking sheet with parchment paper or aluminum foil. Place the marinated salmon fillets skin-side down on the prepared baking sheet. Bake in the preheated oven for 15-20 minutes, or until the salmon flakes easily with a fork.
Remove from the oven and let it rest for a few minutes. Garnish with fresh parsley and lemon slices before serving.
Notes
Serve the baked salmon on a bed of mixed greens or alongside roasted vegetables for a beautiful, colorful plate.