Remove the salmon fillet from the refrigerator and pat it extremely dry with paper towels on both sides to ensure a crispy sear.
Season the flesh side of the salmon evenly with the sea salt, black pepper, and garlic powder.
Heat the olive oil in a non-stick or stainless steel skillet over medium-high heat until the oil is shimmering but not smoking.
Carefully place the salmon in the pan, skin-side down, and press down gently with a spatula for 10 seconds to prevent curling.
Sear the salmon for 4 to 5 minutes without moving it, allowing the skin to become golden and crispy.
While the salmon cooks, whisk together the Greek yogurt, lemon juice, and finely chopped fresh dill in a small bowl until smooth.
Flip the salmon fillet carefully and cook for an additional 2 to 3 minutes, or until the internal temperature reaches 125-130°F for medium-rare.
Remove the salmon from the pan and let it rest for 2 minutes.
Place the cooked quinoa on a plate, top with the pan-seared salmon, and drizzle the lemon-dill sauce over the top before serving.