Steps
1. Preheat your oven to 400°F (200°C).
2. In a small bowl, mix the olive oil, oregano, thyme, minced garlic, salt, and pepper.
3. Place the mackerel fillet on a baking sheet lined with parchment paper.
4. Brush the herb mixture generously over the mackerel fillet.
5. Bake in the preheated oven for about 15 minutes, or until the fish flakes easily with a fork.
6. While the fish is baking, mix the lemon juice with a pinch of salt and pepper to create a simple sauce.
7. Once the mackerel is done, drizzle the lemon garlic sauce over the fillet.
8. Garnish with a lemon slice and fresh parsley before serving.