Dice the chicken breast into bite-sized pieces and season evenly with sea salt and black pepper.
In a small mixing bowl, whisk together the fresh orange juice, tamari, honey, grated fresh ginger, and minced garlic to create the glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat until it begins to shimmer.
Add the chicken to the skillet and sear, stirring occasionally, until golden brown and cooked through, approximately 5-6 minutes.
Remove the chicken from the pan and set aside on a plate.
Add the broccoli florets, sliced red bell pepper, and snap peas to the same skillet, adding a splash of water if needed to steam-sauté for 3-4 minutes until tender-crisp.
Return the cooked chicken to the skillet and pour the orange glaze over the chicken and vegetables.
Toss everything together for 1-2 minutes over heat until the sauce reduces slightly and coats the ingredients in a glossy glaze.
Remove from heat, drizzle with toasted sesame oil, and garnish with sesame seeds and thinly sliced green onions before serving.