Place artichoke hearts in food processor, and process until finely chopped. Spoon into a bowl, and set aside.
Place a large nonstick skillet coated with cooking spray over medium-high heat until hot. Add chicken, and cook 4 minutes on each side or until chicken is done. Remove chicken from skillet, and let cool. Cut chicken into 1-inch pieces, and set aside.
Recoat skillet with cooking spray, and add onions and garlic. Sauté 2 minutes or until tender. Place chicken and onion mixture in food processor; process until finely ground. Add yogurt, mayonnaise, cheese, and sauces, and pulse until well-blended. Add chicken mixture to artichokes; stir well.
Spoon mixture into a 1-quart baking dish coated with cooking spray, and sprinkle with paprika. Bake mixture at 350° for 25 minutes or until heated. Serve spread warm or cold with French bread or crackers.