Core and slice the bell peppers into thin strips. Heat oil in a large skillet over medium heat. When oil is hot, add the peppers and sauté, stirring occasionally, until softened (about 8 minutes).
Wash and chop the romaine. Slice the jalapeno, lime, and cilantro. Wait until just before serving to slice the avocado.
Assemble and Serve
Divide the lettuce between six bowls. Top with carnitas and any desired toppings. Garnish with extra cilantro and slices of lime.
Video
Notes
To store leftovers: Store the carnitas in an air tight container or bag for 3-4 days in the refrigerator and up to 4 months in the freezer.