Preheat oven to 425 degrees F. Spray a baking sheet with olive oil cooking spray.
Prepare stations by putting olive oil in one small bowl and the panko and Italian seasoning in another. You may have to add more as you go.
Season bite size chicken pieces with salt and pepper. Put chicken in the bowl with olive oil and coat completely. Working with a few pieces at a time, move chicken to panko bowl and mix to coat. Then place coated chicken pieces on the prepared baking sheet.
Once all the chicken is on the baking sheet, lightly spray the top with cooking spray and bake for 10 minutes. Flip each piece of chicken then bake for another 5 minutes, or until cooked through.