Pat the salmon fillet dry with paper towels and season both sides with sea salt, black pepper, and garlic powder.
In a small bowl, whisk together the Greek yogurt, fresh chopped dill, lemon juice, and lemon zest until smooth to create the sauce.
Heat the olive oil in a non-stick skillet over medium-high heat until shimmering.
Place the salmon in the hot skillet, skin-side down, and sear for 4-5 minutes until the skin is golden and crispy.
Flip the salmon carefully and cook for another 3-4 minutes, or until the fish is opaque and flakes easily with a fork.
While the salmon finishes, steam the asparagus spears for 3-5 minutes until they are bright green and crisp-tender.
Plate the salmon and asparagus, then spoon the velvety lemon-dill sauce over the fish before serving.