Preheat oven to 375°F. Coat a baking pan with nonstick cooking spray. Brush Dijon evenly over pork. Season with garlic powder, and black pepper to taste.
In a shallow dish combine pistachios and Parmesan. Place pork in pistachio and Parmesan mixture, turning to completely coat and pressing to adhere. Place pork in baking pan; coat lightly with nonstick cooking spray.
Zest and juice one of the lemons. Sprinkle zest and drizzle lemon juice over pork. Thinly slice remaining lemon and place slices on top of pork.
Bake 25 to 35 minutes or until an instant-read thermometer registers 145°F. Remove from oven; let stand 10 minutes. Cut pork into thin slices, and serve.
Serving Size 1
Servings 0
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.