Preheat oven to 375? degrees.
Cut tops off bell peppers and deseed. Set aside.
In a large skillet or cast iron over medium heat, heat olive oil and then saut? onion and garlic until transparent, about 3 - 5 minutes.
Add beef to the skillet and cook until browned. Add bacon, tomato and Italian seasoning and combine. Stir in marinara sauce and crumbled pork rinds.
Stuff each pepper with half of meat mixture and stand peppers upright in a baking dish with at least 1 - 2 inch sides. Bake for 45 minutes.
Remove baking dish from and sprinkle cheeses evenly among peppers.
Switch oven to broil and place dish back in. Broil 5 minutes until cheese is melted and deliciously bubbly.