Grate enough zest from lemon to measure 1/2 teaspoon and squeeze 2 tablespoons juice. Chop capers and in a small bowl whisk together with zest, lemon juice, garlic, and salt and pepper to taste. Add 1/4 cup oil in a slow stream, whisking constantly until blended. Whisk in herbs.
Pat halibut dry and season with salt and pepper. In a nonstick skillet heat remaining tablespoon oil over moderate heat until hot but not smoking and cook halibut, turning once, until golden brown on both sides and just cooked through, about 7 minutes total. Serve halibut topped with salsa verde and garnished with lemon wedges.
Recipe courtesy of Gourmet Magazine