Whisk in the sugar-free honey substitute, coconut aminos, and apple cider vinegar. Return the chicken to the pot.
Secure the lid, seal the valve, and cook on High Pressure for 8 minutes. Allow a natural pressure release for 5 minutes, then quick release the remaining pressure.
Remove the chicken. If a thicker sauce is desired, whisk in the xanthan gum while the liquid is hot. Toss the chicken back in the glaze and garnish with fresh parsley.