Preheat the oven to 400 degrees.
Place breadcrumbs, cornstarch, garlic salt, pepper, onion powder, paprika, parsley, and thyme into a large Ziplock freezer bag and mix well. Add 1 tablespoon of olive oil and mix until it has a sandy texture.
Pour the remaining olive oil into a shallow bowl or plate and use it to coat each piece of chicken.
Add the chicken pieces to the bag, one at a time. Shake chicken around to coat well. If you love thicker breading, repeat this step - coat again in oil, then add to the bag of shake and bake mix.
Place the chicken on a foil-lined baking sheet. Use two pans if necessary to avoid crowding the chicken. Bake for approximately 20 minutes for boneless, or 45 minutes for bone-in. The chicken is fully cooked when the internal temperature is 165 degrees.
Remove chicken from oven and place on a cooling rack. Allowing it to cool directly on a wire cooling rack helps prevent the bottom of the chicken from getting soggy.