Preheat your oven to 400°F (200°C).
Peel and cube the sweet potato into small, even pieces.
Toss sweet potatoes with half of the avocado oil and a pinch of salt, then spread them on a parchment-lined baking sheet.
Roast the sweet potatoes for 15 minutes.
Trim the woody ends off the asparagus and add them to the baking sheet with the sweet potatoes.
Continue roasting for another 10 to 12 minutes until the vegetables are tender and slightly browned.
While the vegetables finish roasting, pat the salmon fillet completely dry with a paper towel and season with salt and pepper.
Heat the remaining avocado oil in a non-stick skillet over medium-high heat until shimmering.
Place the salmon in the pan skin-side down and sear for 4 to 5 minutes without moving it to ensure the skin becomes crisp.
Carefully flip the salmon and cook for an additional 2 to 3 minutes until it reaches your desired level of doneness.
Plate the seared salmon alongside the roasted vegetables and finish the entire dish with a fresh squeeze of lemon juice.