HEAT oven to 375ºF.
COOK and stir bacon and vegetables in nonstick skillet on medium heat 6 min. or until vegetables are crisp-tender. Remove from heat. Stir in dressing.
PLACE chicken in single layer in shallow baking dish sprayed with cooking spray; top with barbecue sauce. Turn chicken to evenly coat with sauce; top with bacon mixture.
BAKE 12 to 14 min. or until chicken is done (165ºF). Top with cheese; bake 2 min. or until melted. Sprinkle with basil.