Combine the marinade ingredients in a small bowl
Place the thin-sliced chicken in a baking dish or a large resealable bag. Pour in half the marinade, and reserve the rest in the fridge for later
Refrigerate the marinading chicken, ideally for about 4 hours or even overnight. You can let the chicken marinade for as little as 30 minutes if you're in a hurry, but the longer it marinades the more flavorful it will be
Preheat your grill to medium-high heat and wipe the grates with a little oil or cooking spray to prevent sticking
Grill the chicken for about 3 to 4 minutes per side, or until the internal temperature reaches about 155 F to 160 F
Remove the grilled chicken to a platter. Drizzle some of the reserved marinade over the chicken, add some lemon slices and fresh parsley, and serve