Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Peel the sweet potato and cut it into small 1/2-inch cubes to ensure they cook at the same rate as the fish.
In a small mixing bowl, whisk together the olive oil, lemon juice, turmeric, garlic powder, sea salt, and black pepper to create a golden marinade.
Place the sweet potato cubes and broccoli florets on the prepared baking sheet and drizzle with half of the marinade, tossing well to coat.
Roast the vegetables for 10 minutes, then remove the tray from the oven.
Push the vegetables to the edges of the pan and place the salmon fillet in the center.
Brush the remaining marinade over the top and sides of the salmon fillet.
Return the pan to the oven and roast for an additional 12 to 15 minutes, or until the salmon is opaque and flakes easily with a fork.
Garnish with freshly chopped parsley and an extra squeeze of lemon if desired before serving.