Preheat grill to 400F. Place foil wrapped potatoes on upper grill grate/rack and close lid. Bake the potatoes in the grill for about 75 minutes or until soft when poked with a toothpick.
While the potatoes are baking, cook the bacon until crispy. Drain on a paper towel and crumble into small pieces.
Let the potatoes cool slightly. With a sharp knife, cut the top off each potato. Scoop out the inside of the potato and spoon into a large bowl. Using a fork, or hand mixer, mix the scooped out potato with butter, cream, sour cream, hot sauce, diced chicken, grated cheese, salt and pepper. Mix until smooth. Spoon the mixture into the potato skins.
With the grill still at 400F, place the potatoes directly on grill grates and close lid. Bake on the grill until cheese is melted and bubbly, about 15-20 minutes.