Ingredients:
- 4 (6-ounce) skinless, boneless chicken breast halves
- 1/2 teaspoon salt, divided
- 1/4 teaspoon black pepper, divided
- cooking spray
- 3 tablespoons minced shallots
- 3 tablespoons Dijon mustard
- 2 tablespoons red wine vinegar
- 2 tablespoons water
- 1 tablespoon extra-virgin olive oil
- 1 teaspoon chopped fresh tarragon
- 1/2 teaspoon sugar
- 4 cups gourmet salad greens
