Steps
1. Heat vegetable oil in a pan over medium-high heat.
2. Add minced garlic and sauté until fragrant (about 30 seconds).
3. Add sliced chicken breast and cook until no longer pink, about 5-6 minutes.
4. Add sliced bell peppers and onions, stir-fry for 2-3 minutes until slightly tender.
5. Stir in soy sauce, chili flakes, salt, and pepper. Cook for another 1-2 minutes.
6. Remove from heat, garnish with chopped green onions and sesame seeds if using.
7. Serve hot with steamed rice or noodles.