Combine marinade ingredients in a bowl. Put chicken in a large Ziploc bag and pour in marinade (adding more lemon or soysauce if needed). Press all the air out of the bag and then seal. Place bag in a bowl and refrigerate overnight. About 30 minutes prior to serving. Alternate chicken, peppers, and onion on skewers (if you are using wood skewers-- remember to soak them in water for at least an hour). You can either grill the kabobs -- OR you can put them in the oven at 375-degrees for 25-30 minutes (or until chicken is cooked through)-- turning half-way through. Serve with lemon rice.