Preheat the oven to 400°F (200°C). Line a rimmed baking sheet with parchment paper or foil.
In a small bowl, combine the salt, black pepper, garlic powder, and smoked paprika.
Place the chicken breasts on the prepared baking sheet. Drizzle with olive oil and rub evenly over both sides.
Sprinkle the seasoning mixture evenly over both sides of the chicken breasts.
Bake for 20 to 25 minutes, or until the internal temperature reaches 165°F (74°C) on a meat thermometer.
Remove from the oven, cover loosely with foil, and let the chicken rest for 5 to 10 minutes before slicing and serving.
Notes
Store leftovers in an airtight container in the refrigerator for up to 4 days. Letting the chicken rest before slicing is crucial to keep the juices inside the meat.