Reserve 4 tablespoons of sauce and then pour the remaining honey mustard mixture over the chicken, toss and cover with plastic wrap and let it sit for about 30-45 minutes at room temperature.
Preheat the grill on medium-medium high heat, grill chicken for about 6 to 7 minutes per side or until chicken is done.
Pour the reserved honey-mustard sauce over chicken and let rest under foil for about 5 minutes. Serve.
Notes
You can easily double this recipe to feed more people!