Preheat the oven to 400 degrees F (200 degrees C).
Rinse and dry potatoes with a paper towel and transfer to a large bowl.
Add olive oil, seasoned salt, salt, and black pepper; mix well.
Spread potatoes on a baking sheet.
Bake in the preheated oven for 30 minutes, turning potatoes occasionally.
Continue baking until potatoes are tender and golden brown, about 30 minutes more.