I found this on the web. It is similar, but not identical, to my old recipe, which I must have buried in my email somewhere
cube chicken breasts. heat oil in medium skillet. saute chicken, onion, and garlic powder, until chicken is cooked through.
add zucchini, let it soften a bit.
add tomatoes and picante sauce. simmer 30 minutes, until thickened.
sprinkle cheese on top.