Preheat oven to 425 degrees Fahrenheit and line a baking sheet with parchment paper.
Slice chicken breast into small bite sized pieces about 1-2 inches in size. You should get a good amount of them. Set aside.
In a small bowl combine flour, 1/2 tsp salt, and 1/4 tsp pepper. Mix to combine and set aside.
In a second bowl, whisk together milk, 1/4 tsp salt, and 1/8 tsp pepper. Set aside.
In a third bowl, add breadcrumbs, 1/4 tsp salt, and 1/8 tsp pepper into another small bowl. Mix to combine. Set aside.
Place bowls of chicken, flour, milk, breadcrumbs, and sheet pan in a line, in that order, so everything is set up.
Dredge each piece of chicken by dipping it in the flour mixture, shaking excess off. Then dip it into the wet mixture ensuring all sides are coated. Let excess drip off. Finally, dip it in the breadcrumbs ensuring it is completely coated. Place breaded piece of chicken on the sheet pan.
Repeat until all pieces are breaded. Make sure they aren’t touching on the pan.
Bake at 425 degrees Fahrenheit for 20-25 minutes, until fully baked and crunchy. No need to flip while baking!