Am I missing something with Beer Can chicken?
Beer Can Chicken has a few tricks to have it turn out amazing as opposed to just average.  I always take my thawed chicken and rub it all over inside and out with vegetable oil and pureed garlic (about one large clove). Then I coat the skin with seasonings like salt, pepper, seasoned salt or chicken/poultry seasoning like sage or an \Italian mix; you can use anything the you want. Cajun spice and lemon are also pretty good.  The beer has to have some flavour to it, don't use a light beer. Apple ciders (strong bow, perry's pear cider, black thorne) or a white wine/cooking cherry will also do the trick. I use a half a pop/beer can and then stuff the chicken and the bottom tray with onions, red peppers, garlic and celery. The key to crispy skin and moist chicken is low heat on the BBQ, turn one side onto medium heat and put the chicken on the off side with the lid closed for 20 minutes per pound of chicken.  Practice makes perfect....chicken.