Fake chick-fil-a-chicken sandwich

3       c            Peanut oil
   1                    Egg
   1       c            Milk
   1       c            flour
   2 1/2   tb           Powdered sugar
     1/2   ts           Pepper
   2       tb           Salt
   2                    Skinless, boneless chicken
                        -breasts, halved
   4                    Plain hamburger buns
   2       tb           Melted butter
   8                    dill pickle slices

  Heat the peanut oil in a pressure cooker over med.
  heat to about 400~F. In a small bowl, beat the egg and
  stir in the milk.  In a separate bowl, combine the
  flour, sugar, pepper, and salt. dip each piece of
  chicken in milk until it is fully moistened. Roll the
  moistened chicken in the flour mixture until
  completely coated. Drop all four chicken pieces into
  the hot oil and close the pressure cooker. When steam
  starts shooting through the pressure release, set the
  timer for 3-1/2 minutes.  While the chicken is
  cooking, spread a coating of melted butter on the face
  of each bun. When the chicken is done, remove it from
  the oil and drain or blot on paper towels. Place two
  pickles on each bottom bun; add a chicken breast, then
  the top bun. To make a deluxe chicken sandwich, simply
  add two tomato slices and a leaf of lettuce.
  Mayonnaise also goes well on this sandwich--it is a
  side order at the restaurant.