Preheat oven to 450°.
Combine first 6 ingredients. Arrange chicken in a 13 x 9-inch baking dish coated with cooking spray. Brush 3/4 cup sauce mixture over chicken. Arrange potatoes, tomatoes, artichokes, and 10 garlic cloves around chicken. Brush vegetables with 1/3 cup sauce mixture. Sprinkle with chopped rosemary and olives. Bake at 450° for 20 minutes. Brush chicken and vegetables with remaining sauce mixture; bake an ad-ditional 25 minutes or until potatoes are tender. Garnish with rosemary sprigs, if desired.