Mix spices on a plate; add chicken, turn to coat both sides of each breast. In a large skillet, heat oil & add chicken; cook 6-7 minutes on each side or until no pink remains.
Meanwhile, prepare couscous as directed on package, omitting salt & oil. Place couscous on serving platter & lay chicken breast on top. Cover to keep warm.
Add red pepper & green onion to skillet; cook for 1-2 minutes. Add mango, orange segments, cilantro & dressing; cook another minute or until heated through, stirring occasionally. Spoon over chicken.