Preparation Mix goat cheese, 6 tablespoons minced arugula, 2 tablespoons oil and 2 teaspoons chives in small bowl. Season generously with pepper. Arrange salmon in single layer on large plate. Drizzle 3 tablespoons oil over. Spoon lemon juice over. Sprinkle with 4 tablespoons minced arugula, 4 teaspoons chives and generous amount of pepper. (Can be prepared 4 hours ahead. Cover and refrigerate.) Just before serving, toast bread. Spread with goat cheese mixture; top with salmon. Place sandwiches on plates. Tuck arugula under sandwiches. Make cut in each lemon slice from center to edge. Twist 1 slice atop each sandwich.
Preparation Mix goat cheese, 6 tablespoons minced arugula, 2 tablespoons oil and 2 teaspoons chives in small bowl. Season generously with pepper. Arrange salmon in single layer on large plate. Drizzle 3 tablespoons oil over. Spoon lemon juice over. Sprinkle with 4 tablespoons minced arugula, 4 teaspoons chives and generous amount of pepper. (Can be prepared 4 hours ahead. Cover and refrigerate.) Just before serving, toast bread. Spread with goat cheese mixture; top with salmon. Place sandwiches on plates. Tuck arugula under sandwiches. Make cut in each lemon slice from center to edge. Twist 1 slice atop each sandwich.