Preheat your oven to 400°F.
Wash and scrub the sweet potato, then prick it with a fork. Place it on a baking sheet, drizzle with 1 tablespoon olive oil, and season lightly with salt and pepper.
Roast the sweet potato in the oven for about 40-45 minutes until tender.
While the sweet potato is roasting, trim the asparagus and toss with a drizzle of olive oil, salt, and pepper. Spread the asparagus out on a separate baking sheet.
Roast the asparagus in the oven for the last 15 minutes of the sweet potato's cooking time, until just tender.
Season the salmon fillet on both sides with salt and pepper.
Heat a non-stick skillet over medium-high heat. Once hot, add the salmon, skin-side down if applicable, and sear for about 4-5 minutes on each side until a golden crust forms and the salmon is just cooked through.
Squeeze fresh lemon juice over the seared salmon for a bright finish.
Plate the salmon alongside the roasted sweet potato and asparagus. Serve immediately and enjoy your nutritious dinner.