Slice each potato till halfway in as many slices as you can/feel like.
Season with olive oil, salt and roast them in the oven at 200°C for about 40 minutes. Turn the tray halfway and baste the potatoes with the olive oil. This will cook them evenly and crispy on all sides.
After 40 minutes you can baste them once more and add the bay leaves and thyme. Roast for 5 more minutes, finish with some Maldon sea salt and they are ready to be served.