Add all of the sauce ingredients to a medium bowl, and whisk until smooth and set aside (you can also use a blender for this).
Next, whisk the eggs in a small bowl and set aside, making sure there are no clumps.
Heat a large pan over medium heat.
Add the sesame oil.
Once hot, add the onions, carrots, celery, and garlic powder, stirring for about 3-5 minutes.
Add the cauliflower rice and stir for about one minute.
Make a well in the middle of the fried rice and pour in the eggs.
Stir until cooked, then add the sauce.
Mix and remove fried rice from the stove.
Top with sesame seeds and chives.