Pour the organic chicken bone broth into the Instant Pot. Add the garlic powder and onion powder.
Place the rack in the Instant Pot and place the frozen, boneless, skinless chicken thighs in the pot.
Close the pot, seal the valve and set it for 10 minutes on Manual.
Meanwhile, mix the ingredients for the dressing.
When the chicken is done, remove it from the pot and shred it with two forks. Drain away any excess liquid. Let the chicken cool completely.
Mix the chicken with the dressing.
Add the red grapes, pecans and celery.
Chill to blend the flavors.