Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Peel and dice the sweet potato into small 1/2-inch cubes to ensure they cook at the same rate as the other ingredients.
Place the sweet potato cubes on the sheet pan, drizzle with 1 teaspoon of avocado oil, and season with a pinch of sea salt and black pepper.
Roast the sweet potatoes for 10 minutes before adding the other components to the tray.
While potatoes roast, toss the broccoli florets in a small bowl with the remaining 1 teaspoon of avocado oil, garlic powder, and a pinch of salt.
Carefully remove the pan from the oven, move the potatoes to one side, and place the salmon fillet and seasoned broccoli on the remaining space.
Season the top of the salmon with the remaining sea salt and black pepper.
Return the pan to the oven and roast for an additional 12-15 minutes until the salmon is flaky and the broccoli is tender-crisp.
Squeeze fresh lemon juice over the entire tray before serving to brighten all the savory flavors.