In a ziplock bag, combine all of the ingredients, except the peppers.
Allow pork to marinate overnight in this mixture.
Add the marinaded pork to a slow-cooked and cooked for 4-6 hours, or unit the pork is cooked and tender.
Preheat the oven to 350F.
Cut each bell pepper in half (lengthwise) and place on a baking sheet.
Bake the bell peppers for 30 minutes in the preheated oven.
To make the low carb stuffed peppers, fill each cooked bell pepper half with equal parts of the barbacoa mixture.
Option to top and serve your low carb stuffed peppers with guacamole.
