SEAR ribs in half the dressing in a roasting pan on medium-high heat 4 min. on each side or until browned on both sides. Remove ribs from pan. Add remaining dressing and carrots to pan; saute until lightly browned. Remove carrots from pan.
RETURN ribs to pan; add chiles. Saute on medium heat 2 min. Whisk broth, barbecue sauce, orange juice, honey and flour until well blended; pour over ribs. Bring to boil; cover. Simmer on low heat 1-1/2 hours. Add carrots; cook 30 min. or until ribs are tender.
REMOVE ribs, carrots and chiles from sauce; discard chiles. Skim excess fat from sauce. Stir soy sauce and orange zest into sauce.