Prep the potatoes: Heat the oven to 425°F (220°C).
Prick each potato a few times with a fork, rub with olive oil, and season all over with salt and pepper. Place directly on the oven rack or on a wire rack set over a baking sheet.
Bake until fluffy: Cook for 45–65 minutes, depending on size, until the skins are crisp and a skewer slides in easily. If you squeeze gently with an oven mitt, the potato should give.
Warm the chicken: While potatoes bake, mix the shredded chicken with BBQ sauce in a saucepan.
Heat over low until hot and saucy, 5–8 minutes. Taste and adjust with more sauce, salt, or a splash of apple cider vinegar for brightness.
Split and fluff: When potatoes are done, let them rest 5 minutes. Cut a slit lengthwise, then gently squeeze the ends to open.
Add a small pat of butter and a pinch of salt, and use a fork to fluff the insides.
Load with chicken: Spoon a generous amount of BBQ chicken into each potato. Don’t overpack to the point of tearing; you can always serve extra chicken on the side.
Add cheese: Sprinkle each potato with cheddar. Place under the broiler for 1–2 minutes until the cheese melts and the edges of the sauce just bubble.
Watch closely so it doesn’t burn.
Top it off: Add sour cream, green onions, bacon, jalapeños, and any extras you like. A handful of chopped cilantro and a few diced red onion bits add a nice fresh bite.
Finish and serve: Drizzle with a little extra BBQ sauce and a crack of black pepper. Serve immediately while hot and melty.