Preheat the oven to 425 degrees F. Line a baking sheet with parchment paper. Brush the paper with oil. Cut the fish into 8 equal pieces; rinse in cold water and thoroughly pat dry. Set the fish in a bowl with mayonnaise and lemon juice and toss to coat. Combine the remaining ingredients, except lemon slices, on a sided plate. Coat the fish in the breadcrumb mixture and set on the baking sheet. Bake for 8 minutes, and then turn each piece over. Bake 4 minutes more, or until cooked through. Serve 2 pieces per serving, garnished with lemon slices.