Preheat grill to medium heat, no more than about 375 to 400 degrees F for this one.
Wipe the inside of your cast iron pan with a bit of butter. I like doing that every time I use mine on the grill.
Place chicken pieces inside the cast iron pan. Sprinkle salt and pepper over top to your own taste.
Bring pan to grill and place on grill grate. Close grill lid. Cook for about 10 to 15 minutes, stirring occasionally.
Add the butter once the moisture cooks out of the chicken, cook in the butter for about 5 to 10 minutes, depending on your grill.
Add 1/2 the BBQ sauce to the pan, cook for about 5 minutes with lid open, stirring occasionally.
Take off the heat carefully, remember that handle is HOT so use a cover and oven mitts.
Add the remaining 1/2 of the BBQ Sauce and stir until combined and coated perfectly.
I cooked mine on the low side of medium heat so start to finish this took about 30 minutes. You can cook it faster by increasing the heat but I find it dries it out if you go over about 375 to 400 degrees F.
Serve with a big old Weber Sweet & Thick Honey BBQ Sauce loving smile!