Start by making the Greek marinade. Add all of the marinade ingredients to a 16- ounce mason jar container and give it a shake. You can also use a mixing bowl and a whisk.
Put the chicken into a large Ziploc bag or glass container, and pour the desired amount of marinade over the chicken. Marinate the chicken for at least an hour or overnight if you can.
Prepare the grill. Set the grill temperature to medium-high heat.
After the grill is hot, then remove the chicken from the marinade and place it directly onto the grill. Discard the marinade.
Close the grill and grill the chicken for 5-7 minutes, and then using tongs, flip to the other side and grill for another 5-7 minutes or until the internal temperature reaches 165º.
Remove the chicken from the grill and place it on a plate and cover it with foil. Let the chicken rest for 3 - 5 minutes before slicing and serving.