Pat the chicken breast dry and cut into bite-sized pieces before tossing in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
In a small glass jar, whisk together the orange juice, coconut aminos, 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 shimmering.
Add the coated chicken to the pan in a single layer and sear for 3-4 minutes per side until golden brown and cooked through, then remove the chicken and set aside.
In the same pan, add the broccoli florets and sliced red bell pepper with a splash of water, covering for 2 minutes to steam-sauté until vibrant and tender.
Return the chicken to the pan and pour the orange glaze over the mixture, stirring constantly for 1-2 minutes until the sauce thickens and coats everything beautifully.
Remove from heat and garnish with sliced green onions and sesame seeds before serving warm.