1. Sprinkle the chicken evenly with salt. Place 3 sage leaves on each cutlet; wrap 2 prosciutto slices around each cutlet, securing sage leaves in place.
2. Heat a large skillet over medium heat. Add 1 tablespoon oil to pan, and swirl to coat. Add chicken to pan; cook for 2 minutes on each side or until done. Remove chicken from pan; keep warm.
3. Combine broth, lemon juice, and cornstarch in a small bowl; stir with a whisk until smooth. Add cornstarch mixture and the remaining 1 teaspoon olive oil to pan; bring to a boil, stirring constantly. Cook for 1 minute or until slightly thickened, stirring constantly with a whisk. Spoon sauce over chicken. Serve with lemon wedges, if desired.