Cut the tomato, eggs, onion, bell peppers, and other vegetables into bite-sized pieces.
Beat the eggs thoroughly with a pinch of salt.
Add cooking oil to a pan and lightly scramble the eggs, then set them aside.
Add oil back to the pan, sauté onions and bell peppers, then add tomatoes and stir-fry.
Return the scrambled eggs to the pan and stir-fry until all ingredients are well combined.
Season with salt and pepper to taste, and it's ready to serve.