Preheat oven to 475° with a rack set at the top level. Sprinkle both sides of fillets with 1/2 tsp. each salt and pepper, then set on a baking sheet lined with foil. Brush tops of fillets with 2 tsp. olive oil and squeeze a little lemon on top.
Combine panko, parmesan, nuts, parsley, zest, remaining 1 tsp. olive oil, and a pinch of salt and pepper. Evenly cover fillets with almond mixture. Bake until fish is opaque in center, 6 to 8 minutes. Serve with more lemon.
Note: Nutritional analysis is per serving.