If your pork belly still has the skin on it, you will need to remove it. Use a sharp knife to remove skin but leave as much of the fat on the belly as possible.
Mix salt, pepper and low carb sweetener together in a small bowl.
Place your pork belly in a deep dish like a turkey roasting pan, rub the dry rub mixture all over the top, bottom and sides of the pork belly.
Place in the fridge, covered for 7 days, turning the pork belly over every 1-2 days. After 7 days, remove pork belly and rinse under cold running water. Pat dry with paper towels.
Optional: Place pork belly on a wire rack, uncovered, in the fridge for 7-8 hours. The drier the pork, the better the smoke will "stick" to the bacon.