Preheat the oven to 400 degrees Fahrenheit
Make teriyaki sauce: Whisk together coconut aminos, garlic powder, ginger, onion powder, apple cider vinegar, cornstarch (optional), sweetener of choice and 1/2 tbsp sesame seeds together
Add the teriyaki sauce and chicken thighs together to marinate for a minimum of 10 minutes
While the chicken is marinating, cook your rice according to package instructions and cup up broccoli. Add the broccoli to a baking pan lined with parchment paper (if you do not have parchment paper, mix broccoli with neutral cooking oil so it does not stick to the pan)
Roast the broccoli for 35 minutes, flipping halfway through.
In a cast iron skillet or oven safe pan, heat sesame oil on medium high heat
Add marinated chicken and remaining sauce to the cast iron skillet. Sear on each side for 3-5 minutes.
When the broccoli reaches 15 minutes left, remove from oven, flip the broccoli and add back in. At the same time, add chicken thighs to the oven to cook for 15 minutes with the broccoli. You can either cook on seperate racks or add the chicken to the same sheet pan as the broccoli!
Once the chicken reaches an internal temperature of 165 degrees Fahrenheit, remove from the oven and sprinkle remaining sesame seeds on top.
Serve chicken, broccoli and rice together!