Scramble the egg in a small mixing bowl. Set aside.
In a separate bowl, mix together the breadcrumbs, Italian seasoning, garlic powder, salt, and pepper. Set aside.
Pour the 1/4 cup of oil into a cast-iron skillet (or some other large skillet) and turn on medium-low heat.
After 1 minute, with clean hands, dip a chicken breast in the egg mixture, coating it thoroughly. Then dip it in the breadcrumb mixture, coating it well. Turn over twice in the bowl. Once well-coated, carefully place in the hot oil.
Repeat the previous step for the other chicken, until all of them are in the pan.
Each chicken breast should cook 3-4 minutes on each side. It will look crispy and golden brown when it's ready to flip.
Line a plate with a paper towel. Once the chicken breasts are cooked, remove them to the lined plate. Let them cool for 1 minute before serving.