Using the S blade of a food processor grind pistachios into coarse crumbs
Mix with panko, olive oil and salt and set aside
Preheat oven to 400 degrees
Drizzle salmon with a little bit of olive oil and coat
Sprinkle kosher salt and blackpepper on the salmon
Bake for 10-12 minutes ( 10 for a thinner fillet and 12 for a thicker)
Remove from oven and raise temperature to 500
Cover fish with mustard and then top with crumbs ( you may have some left over, which you can freeze for next time)
Return to oven for 3 minutes and remove
Serve at room temperature