Preheat the oven to 400°F (200°C)
Pat the chicken breasts dry
Season both sides with salt, pepper, and any desired spices
Lightly oil a baking dish or sheet pan
Place the chicken breasts in a single layer
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