Pat the chicken breast dry with a paper towel and cut into bite-sized 1-inch cubes.
In a small glass bowl, whisk together the tamari, toasted sesame oil, grated fresh ginger, minced garlic, and honey to create the stir-fry sauce.
Heat the avocado oil in a large stainless steel skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet, seasoning with sea salt and black pepper, and sear for 4-5 minutes until golden brown and cooked through.
Remove the chicken from the pan and set aside on a plate.
In the same skillet, add the broccoli florets, sliced red bell pepper, and snap peas with a splash of water to steam-sauté for 3 minutes until vibrant and tender-crisp.
Return the chicken to the pan and pour the prepared sauce over the mixture.
Toss everything together for 1-2 minutes until the sauce thickens slightly and coats the ingredients evenly.
Transfer to a plate and garnish with toasted sesame seeds before serving.