Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it with cooking spray.
In a small bowl, mix together the turmeric, coriander, cumin, garlic powder, ginger powder, red chili flakes, salt, and black pepper.
Pat the fish fillets dry with paper towels and place them on the prepared baking sheet. Drizzle the olive oil and lime juice over the fish.
Sprinkle the spice mixture evenly over the fish fillets, ensuring they are well coated.
Pour the coconut milk over the seasoned fish, allowing it to pool slightly around the fillets.
Bake in the preheated oven for 15-20 minutes, or until the fish flakes easily with a fork and is cooked through.
Remove from the oven and let it rest for a few minutes. Garnish with fresh cilantro and serve with lime wedges on the side.