In a large bowl, toss chicken, peppers, and carrots with stir-fry sauce until evenly coated.
Arrange chicken, peppers, and carrots on the Ninja® Sheet Pan in a single layer.
Select AIR ROAST, set temperature to 400°F, and set time to 20 minutes. Press START/PAUSE to begin preheating.
When unit has preheated, place pan in oven.
After 10 minutes, press START/PAUSE to pause the unit. Add broccoli to pan, return pan to oven, and press START/PAUSE to resume cooking for 8 more minutes.
Cooking is complete when chicken’s internal temperature reaches 165°F. If necessary, return pan to oven and cook for 2 more minutes. When cooking is complete, remove pan from oven. Garnish with sesame seeds and allow to cool for 2 minutes before serving.