Turn pressure cooker on, press “Sauté”, and wait 2 minutes for the pot to heat up. Add the chopped bacon and cook until crispy. Transfer to a plate and set aside. Press “Cancel” to stop sautéing.
Add the chicken, cream cheese, water, vinegar, chives, garlic powder, onion powder, crushed red pepper flakes, dill, salt, and black pepper to the pot. Turn the pot on Manual, High Pressure for 25 minutes and then do a quick release.
Use tongs to transfer the chicken to a large plate, shred it with 2 forks, and return it back to the pot.
Stir in the cheddar cheese and shirataki noodles, and mix until the cheese is gooey.
Top with the crispy bacon and scallion, and serve.