First off, there's this thing called an OVEN. It's powered with electricity, or gas--unless you're Coach, in which case you're deathly afraid of the latter.
Chickens come whole and uncooked in the meat section of your favorite grocery store, warehouse store, or what have you. These chickens are usually quite reasonably priced. Just the other day I saw them at BJ's (think Costco or Sam's Club, you dirty-minded West-coast bastards) for 59 cents per pound if you bought 2. Freeze one for later, and cook the other--whoda thunk it!?!?
And when you make your own chicken, you've done several things--you've made sure you've cooked it to YOUR satisfaction, using a method YOU like, with spices or rub YOU want (or don't), at a cost FAR less than that of "deli" chicken, which BTW, are the ones that are JUUUUUSSSSTTTTTT about ready to be thrown out because they're going bad.
Yup, you heard me right--those chickens you get in the deli section are the ones they're trying to pawn off because the next step was the garbage dumpster.