Poke a hole in the top of the Dorito's bag to release the air. Use a rolling pin or can to crush the chips finely. Prepare egg dip by mixing egg and milk together. Dip chicken into flour, then egg dip, then roll in the crushed Doritios. Place on a sheet pan and let set 10 minutes. Bake in a preheated 400 degree oven for 8-10 minutes or until cooked through and golden brown. While chicken is cooking, mix sour cream and salsa together for dip. Arrange chicken decoratively on some shredded lettuce or cabbage and serve with the salsa dip.