Feel free to customize this garlic chicken stir fry to suit your taste or dietary preferences. You can use tofu or shrimp instead of chicken for a different protein option. For a spicier kick, add more crushed red pepper flakes or a splash of sriracha. You can also incorporate other vegetables like snap peas, carrots, or mushrooms to add more color and nutritional variety. For a gluten-free version, make sure to use tamari or a gluten-free soy sauce replacement.