Pat the chicken breast dry and cut into bite-sized pieces, then toss in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the pan in a single layer and cook for 5-6 minutes, turning occasionally, until the exterior is golden and crispy.
Remove the chicken from the pan and set aside; add the broccoli florets and sliced bell peppers to the same skillet with a splash of water, covering for 2 minutes to steam.
In a small jar, whisk together the orange juice, coconut aminos, minced ginger, minced garlic, and honey.
Return the chicken to the skillet, pour the orange sauce over the mixture, and toss constantly for 1-2 minutes until the glaze thickens and coats everything beautifully.
Garnish with sesame seeds and serve immediately while the chicken is at its crispiest.