Preheat the oven to 400°F
Line a baking sheet with parchment paper or foil
Pat the chicken breasts dry with paper towels
Pound the chicken breasts to an even thickness
Brush or drizzle with oil
Season both sides with salt, pepper, and any desired spices
Place the chicken breasts on the baking sheet with space between them
Bake for 18 to 25 minutes, depending on thickness
Check that the internal temperature reaches 165°F
Remove from the oven and let rest for 5 to 10 minutes
Slice and serve