01 - Preheat oven to 425°F. Line a baking sheet with parchment paper or foil for easy cleanup.
02 - Pat the chicken breasts dry with paper towels. Place them in a large bowl or zip-top bag.
03 - Drizzle olive oil over the chicken and toss to coat evenly.
04 - In a small bowl, combine salt, pepper, garlic powder, smoked paprika, onion powder, thyme, and cayenne pepper.
05 - Sprinkle the seasoning mix evenly over both sides of the chicken breasts and rub in thoroughly.
06 - Arrange the chicken breasts in a single layer on the prepared baking sheet, spacing them slightly apart.
07 - Bake for 18 to 25 minutes, depending on thickness, until the internal temperature reaches 165°F.
08 - Remove from oven, cover loosely with foil, and let rest for 5 minutes before slicing.
09 - Garnish with chopped parsley and serve with lemon wedges if desired.