Cut the base of the romaine off and discard. Wash and dry the romaine lettuce leaves, set aside.
Begin cooking protein in a large cast iron skillet.
Mince the garlic, onion, and bell pepper. Add to the skillet, stir, and allow to cook with the protein.
Once the protein is thoroughly cooked, drain any excess grease.
Add the Homemade Taco Seasoning, stir, and allow to cook for 1-2 more minutes.
Place the individual romaine leaves on a plate to serve as the taco "shells".
Spoon in the protein, then top with slices of avocado.
Grate the carrot over top of the tacos, and finish with fresh cilantro.