Preheat oven to 375 degrees F
In a bowl, big enough to dredge chicken strips, mix yellow mustard and hot sauce. Add a pinch of salt.
Add butter, flour and Panko to three separate bowls
Cut chicken breast into relatively even sized 'fingers'. The amount you get will depend on the size of breast. (So you may need more or less flour, breadcrumbs, butter and hot mustard)
Season chicken fingers with salt and pepper
Line a baking sheet with foil
Coat each chicken finger in this order: butter, flour, hot mustard, Panko crumbs (this gets messy!)
Lay all chicken fingers on the baking sheet once fully coated
Bake in the oven for 25 minutes