Preheat oven to 425°; microwave 2 potatoes in their wrappers on high, 6-8 min, flipping over halfway through cook time (caution, that's a hot potato!); carefully cut in half, discard plastic + set on a lightly oiled sheet pan; mash centers slightly with a fork to create room for filling

Thinly slice ½ the mozzarella ball into 8 slices

Break chicken into bite-size pieces, season with salt/pep + divide onto potatoes; top each tater with about ¼ cup sauce, cheese slices + 1-2 tsp (or more!) seasoning; bake 8-10 min until chicken is hot + cheese is melted