01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - In a small saucepan over medium heat, combine the orange juice, honey, soy sauce, Dijon mustard, orange zest, garlic, black pepper, and salt. Bring to a simmer, stirring occasionally, and cook for 6-8 minutes or until the glaze thickens slightly. Remove from heat.
03 - Pat the salmon fillets dry with paper towels and place them on the prepared baking sheet, skin-side down if applicable.
04 - Brush each fillet generously with the orange glaze, reserving about one-third of the glaze for later.
05 - Bake the salmon for 12-15 minutes, or until the flesh is opaque and flakes easily with a fork.
06 - Remove from the oven and brush with the reserved glaze. Garnish with chopped parsley and orange slices if desired. Serve immediately.