Preheat the oven to 375°F (190°C) and let the salmon come to room temperature for about 15 minutes. Place the salmon on a parchment-lined baking tray, pat dry with a paper towel, and season with salt and pepper.
In a mixing bowl, combine the maple syrup or honey, Dijon mustard, lemon juice, minced garlic, and chopped pistachios to create the crust mixture.
Spread the pistachio mixture evenly over the top of each salmon fillet, pressing gently to adhere.
Bake in the preheated oven for 12 to 15 minutes, or until the salmon is cooked through and flakes easily with a fork.