Prepare chicken breast, tomato, onion, and other ingredients into bite-sized pieces.
Add olive oil to a pan and stir-fry onion and chicken breast.
When the surface of the chicken breast is cooked, add tomato and garlic, and stir-fry.
Add water or chicken stock, herbs (such as basil), salt, and pepper, then bring to a boil.
Simmer on low heat for 10-15 minutes to finish.