answer:While you listen to this by Donavan, consider that you are asking to alter a recipe to exclude most of its key ingredients. You can sauté vegetables to be included, tomatoes, peas, maybe various fungi, maybe chunks of portabellas, in olive oil, then add it to the rice base with any juice or sauce left from the vegetables. And include parsley and bay leaf and of course saffron. But seriously, consider making something else, because it won’t be paella. Paella is wonderful because of the contrast between chicken and fish highlighted by onions and garlic and the saffron.