Baking BBQ Chicken for the first time. HELP?

Your mom is right...cover the pan with aluminum foil so that your chicken doesn't dry out. Check on it about every 30 minutes to make sure its cooking right. Depending how high you have the oven determines the cooking time of the chicken...so on 400 degrees it should only take about 2 hours. After that check and see if its done by slicing into it and checking out the meat inside or slice off a little piece and taste it. Usually I taste mine to make sure its done. You can usually tell what cooked and uncooked chicken looks and tastes like.