Heat a large, heavy-bottomed skillet (preferably cast-iron). Grab a small piece of pizza dough (about 1 tablespoon worth) and roll into a small ball. Dip into butter. Flatten out with your fingers into a tiny disk. Cook over high-heat, about 2 minutes per side, until toasted brown and cooked through. You may need to adjust the size of your little “naan” bites to ensure they cook through and are bite-sized.