I like to do my cooking in bulk and the attached picture shows how I do it. Last night for instance, I stopped by the sweet bay and they had chicken breasts for $1.99 a pound. I bought about $25 worth, took them home and threw them on my smoker for about 3 hours. They literally melt in your mouth. I didn't actually smoke them, just used it to slow cook them. For the price of about 1/4 bag of charcoal, I cooked enough chicken to last me for days. A smoker like this is super efficient (I actually modified it since this to work even better) and will cook for hours.
To be honest, I can't fucking stand chicken (unless fried) I've eaten so much over the years, so it has to be REALLY good in order to keep the gagging down to a minimal. But when trying to get lean, it can't be beat.
When I'm not dieting, I make killer smoked pulled pork, brisket, and ribs. Delicious.