Red Chicken

4 boneless, skinless chicken breasts (I cut mine into strips)
3/4 cup ketchup
3/4 cup brown sugar
1/4 cup cider vinegar or red wine vinegar
onion slices (optional)
1 lemon, sliced

Place chicken in a single layer in sprayed baking dish. Place lemon slices and onion slices over chicken. In a separate bowl, combine ketchup, brown sugar, and vinegar. Pour over meat. Bake at 350 for 45-60 minutes {covered}. Serve over rice.