Bake biscuits according to package directions or recipe. 

In a small bowl, combine melted butter, garlic powder and parsley. Brush butter mixture onto warm biscuits.

Meanwhile, heat barbecue sauce on the stove in a medium saucepan. Add chicken and stir to coat. Continue to cook over medium-low heat until heated through. Cover and set aside.

In a medium mixing bowl, whisk together mayo, Greek yogurt, honey, vinegar and mustard. Add coleslaw mix and stir to coat. Set aside.

Split biscuits and divide the chicken mixture among the biscuit bottoms. Top with coleslaw mixture, then replace the biscuits tops. Secure with a decorative toothpick, if desired.

Serve immediately, with remaining coleslaw on the side.