Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Trim the woody ends off the asparagus spears and place them on the prepared baking sheet.
Melt half of the ghee and drizzle it over the asparagus, tossing to coat evenly with a pinch of sea salt and black pepper.
Roast the asparagus in the oven for 10 to 12 minutes until they are tender and slightly charred at the tips.
While the vegetables roast, pat the salmon fillet dry with a paper towel and rub both sides with turmeric, cumin, chili powder, and the remaining salt and pepper.
Heat the remaining ghee in a non-stick skillet over medium-high heat until shimmering.
Carefully place the salmon in the pan and sear for 3 to 4 minutes per side until the exterior is golden and the fish flakes easily with a fork.
Plate the spiced salmon alongside the roasted asparagus and finish with a bright squeeze of fresh lemon juice before serving.