Cook rice according to package directions.
Heat olive oil in a large skillet over medium-high heat.
Toss chicken with salt, pepper, and cornstarch. Add to skillet and cook until golden and cooked through, about 6–8 minutes. Remove and set aside.
In the same skillet, cook broccoli, bell pepper, carrots, and snap peas for 4–5 minutes until crisp-tender.
In a small bowl, whisk together orange juice, orange zest, coconut aminos, rice vinegar, sesame oil, honey, garlic, and ginger.
Pour sauce into the skillet and bring to a simmer.
Stir in the cornstarch slurry and cook for 1–2 minutes until thickened.
Return chicken to the skillet and toss to coat.
Serve over rice and garnish with green onions and sesame seeds.