Follow these steps to create your Garlic Chicken with Broccoli and Spinach:

1. Prepare the Chicken: Slice the chicken breasts into thin strips for even cooking. Season with salt and pepper.
2. Heat the Pan: In a large skillet, heat the olive oil over medium-high heat.
3. Cook the Chicken: Add the chicken strips to the skillet. Cook for 5-7 minutes or until golden brown, stirring occasionally.
4. Add Garlic: Once the chicken is nearly cooked through, add the minced garlic to the pan. Sauté for 1-2 minutes until fragrant, being careful not to burn the garlic.
5. Add Broccoli: Toss in the broccoli florets. Stir well to combine. Cook for about 3-4 minutes until the broccoli is bright green and tender.
6. Incorporate Spinach: Add the fresh spinach to the skillet. Stir until wilted, about 2 minutes.
7. Prepare the Sauce: In a small bowl, mix the soy sauce and cornstarch. Pour this mixture over the chicken and vegetables in the skillet.
8. Finish Cooking: Stir to coat everything in the sauce and cook for an additional 2 minutes, allowing the sauce to thicken slightly.
9. Taste and Adjust: Taste the mixture and adjust seasoning with more salt or pepper if needed.
10. Serve: Once everything is well combined and cooked, remove from heat.