Add chicken into Instant Pot. Sprinkle with seasoning salt and toss well. Pour in the broth. Dump mushrooms in. Add garlic powder, parsley, onion flakes, Dijon mustard, and honey. Don’t stir.
Make a cornstarch slurry. Set to sauté. Stir the mixture into the pot. Turn off Instant Pot once thickened. In a bowl stir the sour cream and some sauce from the pot. Then stir the mixture in.