Pound the chicken breasts in a resealable bag with a wooden hammer or meat tenderizer to ¼ - ½” thick prior to marinating.
Marinate the chicken at least 30 minutes to overnight.
Set your Masterbuilt Gravity Series Grill to 400F. Let preheat for 15-20 minutes.
Grill your chicken directly on the grill racks for 5-6 minutes on each side, or until fully cooked.
The chicken is fully cooked when internal temperature reaches 165F.