Pat the chicken breast dry and cut into bite-sized cubes.
In a small bowl, toss the chicken with arrowroot starch, sea salt, and black pepper until evenly coated.
Heat the toasted sesame oil in a large skillet or wok over medium-high heat.
Add the chicken to the pan in a single layer and sear until golden brown and cooked through, about 5-6 minutes. Remove chicken from the pan and set aside.
In the same skillet, add the broccoli and sliced bell peppers with a tablespoon of water. Cover for 2 minutes to steam-fry until tender-crisp.
Stir in the minced ginger and garlic, sautéing for 30 seconds until fragrant.
Return the chicken to the skillet and pour in the tamari and honey.
Toss everything together for 1 minute until the sauce thickens and glazes the chicken and vegetables.
Garnish with sesame seeds and sliced green onions before serving immediately.