While I'm at it I might as well add this other favorite summertime grilled chicken recipe. It's one we kinda made up so the amounts aren't really exact. We typically use one avocado/tomato for the two of us.
Mix together equal amounts of chopped tomatoes, chopped avocados and crumbled feta cheese. Add salt, pepper and lime juice to taste.
Grill or bake chicken breasts. Add topping and serve. Yummm.