1. Place boneless, skinless chicken breasts in a medium skillet or saucepan and add lightly salted water to cover; bring to a boil. Cover, reduce heat to low and simmer gently until chicken is cooked through and no longer pink in the middle, 10 to 12 minutes. Use 2 forks to shred into bite-size pieces.
2. Heat oil in a large nonstick skillet over medium-high heat. Add pears and cook, stirring occasionally, until they start to brown, about 2 minutes. Transfer to a small bowl.
3. Whisk shallot, vinegar and mustard in a small bowl; add to the pan and cook, stirring constantly, for 30 seconds.
4. Add the cooked chicken, radicchio, fennel, carrot and walnuts. Cook, stirring occasionally, until just wilted, about 3 minutes. Return the pears to the pan. Season with salt and pepper.
5. Divide lettuce leaves between 2 plates. Top with the warm chicken salad and sprinkle with cheese.

Serves 2.

NUTRITION INFORMATION: Per serving: 395 calories; 17 g fat (5 g sat, 7 g mono); 75 mg cholesterol; 32 g carbohydrate; 31 g protein; 8 g fiber; 548 mg sodium; 1,058 mg potassium. Nutrition bonus: Vitamin A (140% daily value), Vitamin C (40% dv), Potassium (30% dv), Calcium (20% dv), Folate (19% dv).