Preheat the oven to 400°F (200°C)
Line a baking sheet or dish with foil or parchment paper
Pat the chicken breasts dry with paper towels
Brush or rub the chicken with oil
Season both sides with salt, pepper, and any desired spices
Place the chicken breasts on the prepared baking sheet or in the baking dish
Bake for 20 to 30 minutes, depending on thickness
Check that the internal temperature reaches 165°F (74°C)
Remove from the oven and let rest for 5 to 10 minutes
Slice and serve