Heat oil in a large skillet over medium-high heat (I used 12" skillet). Add pork loin filet strips to the skillet, and cook for about 5 minutes, or until cooked through. Transfer cooked strips to a plate.
Add chopped carrots, bell pepper, onion, and garlic to the skillet, and if necessary add more olive oil. Season with salt and freshly ground black pepper. Saute for about 5 minutes, or until vegetables are tender.
Add rice to the skillet and stir well. Season the rice-vegetable mixture with salt, black pepper, and oregano. Add lemon zest to the vegetable stock and pour over the rice mixture. Bring to a boil, cover and simmer for about 12-14 minutes until rice is cooked.
Add the juice of 1 lemon and the cooked pork slices to the rice-vegetable mixture and stir well. Add garbanzo beans, olives and garnish with chopped fresh parsley.