Creating Healthy Chicken Pomodoro Skillet is easy if you follow these steps:

1. Heat Olive Oil: In a large skillet over medium heat, warm the olive oil.
2. Cook Chicken: Add the cubed chicken breast to the skillet and sprinkle with salt and pepper. Cook for about 5-7 minutes until browned and cooked through.
3. Add Garlic: Stir in the minced garlic and cook for an additional minute until fragrant.
4. Incorporate Tomatoes: Pour in the crushed tomatoes and add the halved cherry tomatoes. Stir well.
5. Season: Sprinkle in the Italian seasoning and red pepper flakes (if using), mixed well to combine.
6. Add Greens: Reduce heat to low and stir in spinach or kale. Cook until just wilted, about 2-3 minutes.
7. Taste and Adjust: Taste and adjust seasoning with more salt and pepper if necessary.
8. Serve Immediately: Once everything is well mixed and heated through, remove from heat.