Whisk all ingredients except chicken. Brush (I used a silicone spatula) with mix and grill over med-high, brushing chicken with mix as needed.
I used a cast iron ridged grill pan with my electric range set to "5". I found I did not need to add additional sauce to the chicken as it cooked, but you may want more.
If you didn't toss your chicken into the bowl to coat it (ya know, like I did!) you can serve the mayo mix on the side too!