Cook chicken in large skillet on medium-high heat 2 to 3 min. on each side or until lightly browned on both sides. Meanwhile, mix cream cheese spread, milk, lemon zest, juice, garlic powder and pepper until blended.
Mix 3/4 cup cream cheese mixture, broth and capers; pour over chicken. Cover; simmer on low heat 5 to 6 min. or until chicken is done (165F).
Meanwhile, place asparagus in shallow microwaveable dish.
Add water; cover with waxed paper. Microwave on HIGH 4 to 5 min. or until asparagus is crisp-tender.