Cut the chicken breast into bite-sized cubes and mince the garlic and ginger.
In a small bowl, whisk together the chili garlic sauce, tamari, rice vinegar, and red pepper flakes to create the glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sear until golden brown and cooked through, then remove the chicken and set aside.
Add the sesame oil to the same skillet, then toss in the broccoli, sliced bell peppers, and snap peas.
Stir-fry the vegetables for 3-4 minutes until they are tender-crisp and vibrant.
Add the minced garlic and ginger to the vegetables and cook for 30 seconds until fragrant.
Return the chicken to the skillet and pour the chili garlic glaze over the mixture.
Toss everything together for 1 minute until the sauce thickens slightly and coats every ingredient evenly.
Serve immediately while hot and steaming.