Prep the chicken: Pat the chicken breasts dry with paper towels. If they’re thick on one end, place them between two sheets of parchment and gently pound to an even 1/2–3/4 inch. This helps them cook evenly.
Season: Sprinkle both sides with salt and black pepper.
Set aside.
Make the pistachio crust: Add pistachios to a food processor. Pulse until they are finely chopped with small bits (avoid turning them into paste). Transfer to a bowl and mix in panko, Parmesan, garlic powder, onion powder, and smoked paprika.
Mix the binder: In a small bowl, stir together Dijon, mayonnaise, 1 tablespoon olive oil, and the lemon zest.
This helps the crust stick and keeps the chicken moist.
Coat the chicken: Brush each breast with a thin layer of the Dijon mixture. Press into the pistachio mixture to coat both sides, patting firmly so it adheres. Place on a parchment-lined baking sheet.
Drizzle or brush the tops with the remaining 1 tablespoon olive oil.
Bake: Bake at 400°F (200°C) for 18–22 minutes, depending on thickness, until the internal temperature reaches 165°F (74°C) and the crust is golden.
Rest and finish: Let the chicken rest 5 minutes. Squeeze lemon juice over the top and sprinkle with parsley. Add extra chopped pistachios if you like more crunch.
Serve: Pair with a simple arugula salad, roasted carrots, or garlic mashed potatoes.
Lemon wedges on the side brighten every bite.