Warmth oven to 450˚F. Zest lemon until you could have 1 teaspoon of zest. Mix pistachios, parsley and lemon zest in bowl, and established aside till ultimately able to serve. Scale back zested lemon into 4 wedges, for serving.
Toss broccoli rabe in bowl with 2 tablespoons oil, teaspoon salt and teaspoon pepper. Set up on half of rimmed baking sheet. Rub salmon with remaining oil, and sprinkle with teaspoon salt and teaspoon pepper. Put together salmon on different 50 % of baking sheet.
Roast until broccoli rabe is tender and facilities of salmon are even now translucent when checked with the thought of a paring knife (it want to enroll 125˚F on a meat thermometer for medium-rare), about 8–12 minutes. Divide amid plates, sprinkle salmon with gremolata, and supply immediately with lemon wedges. Serves 4.