Make Thai peanut sauce by combining all the ingredients and simmering on the stove. Once the sauce has cooled, marinate the chicken pieces in 1 cup of sauce for 20 minutes. Next, quarter the Vidalia onions and slice the zucchini. Skewer the chicken, Vidalia onion (about three layers thick of onion) and zucchini alternating ingredients on the skewer.
Preheat your grill to 350 degrees, about medium heat. Grill the skewers for seven minutes or until an internal read thermometer registers 170 degrees for the chicken.
Serve the skewers with rice and additional Thai Peanut sauce for dipping. The Thai Peanut sauce is great for flavoring the rice and is quite addictive.