Trim fat from chicken and cut into bite size pieces.
In a medium mixing bowl, add Potato Starch, Chinese Five Spice, Salt and Pepper and combine. Add Chicken to Potato Starch and coat well. Dip chicken into the egg mixture and set aside.
Select Saute, Browning or other button on your Pressure Cooker and allow pot to fully heat.
Add oil to the cooking pot. Using tongs, pick up Chicken pieces, shake off excess Egg and place into Pressure Cooker cooking pot, being careful not to crowd chicken. Sear Chicken on all sides and remove to a plate. Repeat, until all Chicken has been seared and puffy.
Add water and deglaze pot. Add in sauce and whisk together. Carefully place Chicken into sauce.