Sauteed Trout with Pecans

4 trout fillets with skin
1/4 teaspoon cayenne
1/2 cup all-purpose flour
1 1/4 sticks unsalted butter, divided
3/4 cup pecans, chopped
2 tablespoons fresh lemon juice
1/3 cup chopped parsley

Pat fillets dry and rub flesh sides with cayenne, 1/2 teaspoon salt,
and 1/4 teaspoon black pepper (total). Dredge in flour.

Heat 1/2 stick butter in a 12-inch heavy skillet over medium heat
until foam subsides, then cook trout, skin side down, until skin is
golden-brown, about 4 minutes. Turn fish over and cook until just
cooked through, 1 to 2 minutes more. Transfer to a plate with a
slotted spatula and keep warm, loosely covered with foil.

Pour off butter from skillet and wipe clean, then cook pecans with
remaining 3/4 stick butter, 1/4 teaspoon salt, and 1/8 teaspoon
pepper over medium heat, stirring occasionally, until golden-brown,
about 2 minutes. Stir in lemon juice and parsley and spoon over
trout.