Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a small bowl, whisk together the tamari, maple syrup, minced ginger, and minced garlic to create the teriyaki glaze.
Place the asparagus spears on the baking sheet, drizzle with half of the sesame oil, and season with sea salt and black pepper.
Pat the salmon fillet dry with a paper towel and season both sides lightly with salt and pepper.
Heat the remaining sesame oil in an oven-safe skillet over medium-high heat.
Place the salmon in the skillet skin-side up and sear for 3 minutes until a golden crust forms, then carefully flip the fillet.
Brush the top of the salmon generously with the prepared teriyaki glaze.
Transfer the skillet and the baking sheet of asparagus to the oven.
Roast for 8 to 10 minutes until the salmon is flaky and the asparagus is tender-crisp.
Remove from the oven, drizzle any remaining glaze over the fish, and garnish with sesame seeds before serving.