Pan-Seared Chicken with Orange & Grapefruit Sauce

Remove skin and white pith from grapefruit and orange with a sharp knife and discard. Cut the segments away from their surrounding membranes into a bowl (discard seeds). Squeeze any remaining juice from the membranes into the bowl. Drain the segments and measure the juice. Add enough water, if necessary, to make 1/2 cup and set the juice and fruit aside.

Combine flour, salt and pepper in a shallow dish. Dredge chicken lightly in the flour mixture.

Heat 2 teaspoons oil in a nonstick skillet over medium-high heat. Add the chicken and cook until golden on the outside and no longer pink inside, 3 to 4 minutes per side. (Reduce heat to medium if the chicken is browning too quickly.) Remove to a plate, cover and keep warm.

Add the remaining 1 teaspoon oil to the pan. Add leek and cook, stirring, until softened, about 3 minutes. Add the reserved fruit juices and vermouth and bring to a boil. Boil until reduced by half, about 3 minutes. Reduce heat to low and add marmalade, the reserved fruit, mint and pepper to taste. Return chicken to the pan and reheat gently.