Most people smoke the chicken to a slightly underdone stage, then put into a 500-550 degree oven for a short bit to crisp the skin. It's interesting that you crisped the skin first, then smoked. The theory is that meat takes in smoke flavor when it is under 140 degrees. So your precooking (in theory) would inhibit smoke absorption, and the smoke would mostly sit on the outside of the meat, which can produce a less tasty smoke. But, since you said it was delicious, that is all that matters! Maybe others have tried, or will try, and report results.
I personally long ago gave up on worrying about crispy skin. The dog loves it, and if I am feeling particularly caveman that day, I will rip at, and chow down on some papery skin! There are so many other methods of cooking poultry that produce delicious, crispy skin, yet bland and boring tasting meat. I figure I am willing to sacrifice the perfect skin in favor of the ever elusive, delicious, flavorful poultry meat.