```json
{
"recipe_name": "Healthy Chicken with Tomato and Onion",
"ingredients": [
"2 boneless, skinless chicken breasts",
"1 large tomato, diced",
"1 onion, sliced",
"1 tablespoon olive oil",
"Salt and pepper to taste",
"1 teaspoon dried oregano",
"1 teaspoon garlic powder"
],
"instructions": [
"1. Heat olive oil in a non-stick skillet over medium heat.",
"2. Season chicken breasts with salt, pepper, oregano, and garlic powder.",
"3. Add chicken to the skillet and cook for 5-6 minutes on each side, or until fully cooked.",
"4. Remove chicken from the skillet and set aside.",
"5. In the same skillet, add sliced onions and diced tomatoes. Cook until softened, about 5 minutes.",
"6. Return the chicken to the skillet and mix with the tomato and onion mixture.",
"7. Cook for an additional 2-3 minutes to let the flavors combine.",
"8. Serve hot and enjoy your healthy chicken with tomato and onion!"
]
}
```