Heat the oven to 400°F. Line a rimmed baking sheet with parchment paper. Start preheating while you prepare the salmon and glaze.
Pat the salmon dry and check for pin bones. Arrange the fillets skin-side down on the baking sheet. Brush with olive oil and season with kosher salt and black pepper.
In a small bowl, whisk together the honey, low-sodium soy sauce or tamari, lemon juice, minced garlic, and Dijon mustard.
Bake the salmon for 8 minutes.
Carefully remove the pan from the oven and brush or spoon the honey-garlic glaze over the fillets.
Return the pan to the oven and bake for 4–7 minutes more, until the thickest part of the largest fillet reaches 145°F on an instant-read thermometer and the fish separates easily with a fork. Thicker pieces may need a little longer. Garnish with green onions and lemon wedges, if desired, and serve right away.