Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Trim the woody ends from the asparagus and toss the spears on the baking sheet with 0.5 tablespoons of olive oil and half of the sea salt and black pepper.
Roast for 12 to 15 minutes until the asparagus is tender and slightly charred.
Pat the salmon fillet dry with a paper towel and season both sides with the remaining sea salt, black pepper, and dried oregano.
Heat the remaining 0.5 tablespoons of olive oil in a skillet over medium-high heat.
Place the salmon in the pan, skin-side down, and sear for 4 to 5 minutes until the skin is golden and crispy.
Carefully flip the salmon and cook for another 3 to 4 minutes until it is cooked through and flakes easily with a fork.
Mince the garlic and add it to the pan during the final minute of cooking to infuse the oil with aromatic flavor.
Plate the salmon alongside the roasted asparagus and finish with a fresh squeeze from the lemon half.