COOK and stir bacon in large deep skillet until crisp. Remove bacon from skillet with slotted spoon, reserving 2 Tbsp. drippings in skillet; drain bacon on paper towels. Add chicken to skillet; cook on medium heat 4 min. on each side or until browned on both sides. Remove from skillet; cover to keep warm. Discard drippings from skillet.
ADD carrots, mushrooms, onions and garlic to same skillet; cook and stir on medium-high heat 6 min. Whisk together broth, dressing and flour; add to skillet. Stir in bacon. Top with chicken; cover.
SIMMER on medium-low heat 20 min. or until chicken is done (165ºF). Garnish with thyme.