Preheat oven to 425°F. Line a rimmed baking sheet with aluminum foil and spray with non-stick spray. Set aside.
In a small saucepan, whisk together the orange zest, orange juice, and maple syrup. Bring to a simmer over medium-high heat and cook, stirring frequently, until slightly thickened (about 3-4 minutes).
Remove the saucepan from the heat. Whisk in the Dijon until smooth.
While the glaze is simmering, season the salmon with salt and pepper.
Place salmon skin-side down on the prepared baking sheet.
Brush some of the glaze onto each salmon fillet.
Cook on the top rack of the oven for 10 minutes.
Brush the salmon with additional glaze (you might not need all of the glaze, so discard any excess). Turn the oven setting to "BROIL" on high. Place the salmon about 4-6 inches from the broiler. Broil for 2-3 more minutes, or until the outside is crispy and the fish flakes easily with a fork.
Garnish with fresh herbs, if desired, and serve!