Preheat your grill or a heavy grill pan over medium-high heat.
In a small bowl, whisk together 1 teaspoon of olive oil, the lemon juice, lemon zest, minced garlic, and chopped fresh dill to create the marinade.
Season the salmon fillet on both sides with sea salt and black pepper, then brush the top with half of the prepared lemon-herb mixture.
In a separate bowl, toss the asparagus spears with the remaining 1 teaspoon of olive oil and a small pinch of sea salt until evenly coated.
Place the salmon on the hot grill skin-side down and cook for approximately 4 to 5 minutes without moving it to ensure a good sear.
Add the asparagus spears to the grill alongside the salmon, cooking for 4 to 5 minutes and turning occasionally until they are snappy and lightly charred.
Carefully flip the salmon fillet and cook for an additional 2 to 3 minutes until the flesh is opaque and flakes easily with a fork.
Arrange the fluffy quinoa on a plate, top with the grilled salmon and asparagus, and drizzle the remaining lemon-herb sauce over everything before serving.