Combine basil, parsley, garlic, olives, lemon zest and juice, nuts, cheese, EVOO and salt and pepper in a food processor; process into pesto.
Heat oven to 400F. Place a rack in the center of the oven.
In a bowl, combine pesto with breadcrumbs.
Arrange fish on a nonstick or parchment-lined baking sheet. Top fish with breadcrumbs and bake until firm and cooked through, and the breadcrumbs have browned.
Serve with lemon wedges and side of pasta.