Preheat your grill or grill pan to medium-high heat.
Pat the salmon fillet completely dry with a paper towel to ensure a clean, golden sear.
In a small bowl, whisk together the extra virgin olive oil, lemon zest, lemon juice, garlic powder, and dried oregano.
Season the salmon fillet with the sea salt and black pepper, then brush the lemon-herb mixture generously over the flesh side.
Trim the woody ends off the asparagus spears and toss them with the melted ghee and a small pinch of salt.
Place the salmon on the grill, skin-side down, and cook for 4-5 minutes without moving it.
Carefully flip the salmon and grill for another 2-3 minutes until the internal temperature reaches 145 degrees Fahrenheit.
Grill the asparagus spears alongside the salmon during the final 5 minutes of cooking, turning occasionally until tender and slightly charred.
Remove from the heat and let the salmon rest for 2 minutes before serving.