Cut the chicken tenderloin into bite-sized pieces.
Chop onions, celery, carrots, and cabbage into easy-to-eat sizes.
Heat olive oil in a pot and sauté the chicken tenderloin.
Add all the prepared vegetables and stir-fry for 2-3 minutes.
Add chopped tomatoes (or canned tomatoes) and water.
Season with salt and pepper, cover with a lid, and let it simmer.
When the vegetables and chicken are tender, it's ready.