One-Pan Barbecue Chicken and Roasted Sweet Potatoes

bone-in, skin-on chicken thighs (about 2 1/4 pounds total)

barbecue sauce, or as needed to marinate and coat chicken (I used a sweeter, mildly spicy, Carolina Gold version)

large potatoes, diced into 1/2-inch pieces and peeled if desired (I used 2 peeled sweet potatoes and 1 unpeeled Russet potato)

to 3 tablespoons olive oil

salt, or to taste

pepper, or to taste