Position an oven rack in the upper third of the oven so the top of the salmon will be about 6 inches from the broiler element; preheat the broiler on high.
Line a baking dish or rimmed sheet with aluminum foil or broiler-safe parchment.
Arrange the 4 salmon fillets in a single layer, skin-side down, without touching.
Brush each fillet with the 2 tablespoons olive oil, then sprinkle each evenly with the Salmon Seasoning.
Broil the salmon for 7 to 9 minutes, checking at 6 minutes to gauge doneness; the salmon is done when it flakes easily and an instant-read thermometer at the thickest part reads 135°F for medium-rare or about 140°F for well-done.
If the tops are browning too quickly, loosely tent with foil to prevent burning.
Remove the salmon and let it rest 5 minutes to finish cooking through by carryover heat.
Serve warm, garnished with chopped fresh herbs if desired.