Its all depend on what you wan to do with it. Isla suggestion with baking it is a good idea, and there are 1000s of way to bake, barbecue, broil, fry, boil, stew & curry chicken.
Quick South East Asian technique - A quick way to cook skinless chicken breast is to broil/bake it with teriyaki sauce & garlic in a pan. (It takes a bout 5-min with a close lid on medium/high).
A common North American technique - Barbecue chicken breast & drumstick with barbecue sauce in the oven for about 30min.
Isla, suggestion is a deviant of European preparation of fouls ? Greek & Spanish chicken serve with paella is quite a good dish. (Better yet, barbecue lamb serve with seafood paella)
East/West Indian Chicken Curry ? Also a great dish, but it take a long time to cook because you need to stew the flavor into the meat. (Server with West Indian rice or bake bread fruit)
Thai Land trademark - My favorite is Thai Chicken Satay with spicy peanut sauce, serve with rice & steam vegetable. (Similar to the first way, but it take an extra 1/2~1 hour of sauteing the chicken prior to cooking).