Using a skillet over the stove or using the microwave, warm the rice, beans, and corn. Recrisp the carnitas separately in another skillet.
Chop the fresh ingredients while the others warm up in the pan. Then, assemble the bowls with rice, beans, and corn on the bottom, then a layer of carnitas, and finish with the fresh ingredients.
Generously squeeze lime juice over each portion. Serve with additional lime wedges and additional toppings of your choice.