Preheat the Oven - Set the oven rack to the middle position. Preheat to 425ºF (218ºC). Line a rimmed baking sheet with foil. Lightly grease with oil to help prevent sticking.
Prepare the Seasoning - In a small bowl, combine salt, paprika, garlic powder, onion powder, black pepper, and Italian seasoning.
Flatten the Pieces - Thoroughly dry each chicken breast with a paper towel. Place one breast between two plastic sheets or inside a large plastic bag and pound to an even thickness, about ¾" thick. Repeat with the remaining pieces.
Season the Meat - Generously brush olive oil on both sides of the chicken. Evenly sprinkle the seasoning mixture on both sides, about ½ to 1 teaspoon per side, depending on the size and desired seasoning level. Store extra seasoning in an airtight container for later use.
Bake - Place the breasts on the prepared baking sheet. Bake until the internal temperature reaches between 160 to 165ºF (71 to 74ºC), about 14 to 17 minutes, depending on the thickness.
Rest - Allow the chicken to rest for 5 minutes before serving.
Notes
Storing: The chicken can be stored in an airtight container in the refrigerator for up to 5 days.
Freezing: Individually wrap the cooked and cooled chicken breasts. Store in a resealable plastic bag or airtight container for up to 4 months. Defrost in the refrigerator before reheating.
Reheating: Cover and microwave on high setting in 15 to 30-second increments until hot.