Heat a large nonstick skillet coated with cooking spray over medium-high heat until hot. Add apple, leek, and sugar; sauté 12 minutes or until browned. Remove from pan, and set aside.
Combine cheese, flour, 1/4 teaspoon salt, and pepper in a shallow dish. Dredge chicken in cheese mixture. Heat butter in pan over medium-high heat. Add chicken to pan; sauté 4 minutes on each side or until chicken is done. Remove chicken from pan; keep warm. Add juice and broth to pan, scraping pan to loosen browned bits. Bring to a boil; cook broth mixture until reduced to 1 1/2 cups (about 7 minutes).
Add cream; reduce heat, and cook 5 minutes. Stir in reserved apple mixture, rosemary, and 1/4 teaspoon salt; cook 2 minutes. Spoon rice onto each of 4 plates; top with chicken and sauce.