is it possible to use the indirect method for barbequeing bone-in, skin-on chicken breasts?
Yes. I would direct grill first to crisp the skin and then cook indirectly to finish cooking the meat. That is a great way to cook the chicken without burning the skin.
Should they be covered with rub and moped during the process or do you recomend another method?
Yes to the rub, no on the mop. Others may disagree but it think if you want crispy skin, don't mop.