cookbooks, I found, are intended for people with time to cook - and, surprisingly often, for people who already know how to cook.
Almost anything can be stretched to serve more people by being added to a white sauce or canned gravy or undiluted or very slightly diluted canned soup and served over noodles or rice. With chops or chocolate eclairs, however, the only solution is to claim you don't like them.
It is possible to ruin a chicken in the cooking of it, but not easily. Short of burning it or letting it get dried out, you can hardly go wrong.