Heat the oven to 375°F (190°C).

In a food processor or blender, combine the herbs, pistachios, olive oil, lemon juice, lemon zest, honey, and a generous pinch of salt. Blend until a thick, textured paste forms.

Place the salmon in a baking dish or on a parchment-lined sheet pan. For color and added aroma, arrange thin slices of orange underneath the fish, if desired. Season the salmon with salt and black pepper, then spread the pistachio-herb paste evenly over the top.

Bake for 18 to 20 minutes, or until the salmon is just cooked through and flakes easily with a fork. Let rest for a few minutes before serving.