Add a dash of pepper to the cubed chicken. Melt butter in pressure cooker on high saute. Next, lightly brown cubed chicken in pressure cooker for about a minute or Press the cancel/warm to cancel. Add onions, celery, carrots, potatoes, thyme, salt, pepper, uncooked noodles and broth mixture (in this order) Close lid and turn pressure cooker on HP and cook for 6 minutes. Will take around 10 to 15 minutes to come to pressure. Once finished open with quick release. Stir pot and stir in warm mixed vegetables.