Mix broth, mustard, cream cheese and herbs until well blended; set aside.
Cook chicken in hot oil in nonstick skillet until browned on both sides, about 15 min.
Stir in the mustard sauce and garlic. Simmer over medium heat 3 to 5 min. until sauce thickens slightly and flavors are blended.
Tip: Substitute 2 tbsp. prepared pesto sauce for the herbs.