Preheat oven to 400°.
Heat a large ovenproof nonstick skillet over medium-high heat. Sprinkle duck with pepper. Add duck to pan; cook 2 minutes on each side or until browned. Place pan in oven, and bake at 400° for 15 minutes or until desired degree of doneness. Remove duck from pan; let stand 10 minutes. Remove and discard skin from duck; cut duck crosswise into thin slices.
Combine lime juice, honey, vinegar, fish sauce, sambal oelek, and shallots, stirring with a whisk. Combine Boston lettuce and remaining ingredients in a large bowl. Drizzle 6 tablespoons juice mixture over lettuce mixture, and toss to coat. Divide salad evenly among 4 plates. Divide duck evenly among salads. Drizzle each serving with 1 1/2 teaspoons juice mixture.