Pat the chicken dry and cut into bite-sized pieces.
Toss the chicken in a bowl with arrowroot starch, sea salt, and black pepper until evenly coated.
In a small jar, whisk together the orange juice, orange zest, coconut aminos, minced ginger, and minced garlic.
Heat the sesame oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and cook for 5-6 minutes until golden brown and cooked through.
Add the broccoli florets and sliced red bell pepper to the pan, stir-frying for 3-4 minutes until crisp-tender.
Pour the orange sauce over the chicken and vegetables.
Simmer for 1-2 minutes until the sauce thickens into a glossy glaze that coats everything beautifully.