Preheat the oven to 180C or 350F.
Add the water, oil, herbs, lemon juice, lemon halves and seasoning to your baking dish. Mix them a little to combine.
Arrange the potatoes in the tray, and place into the oven for 40 minutes.
Once the 40 minutes is up, remove the potatoes from the oven to flip them over. A good portion of the liquid should have been absorbed by now, and your house should smell divine.
Return potatoes to the oven for an additional 40 minutes. After this time, turn the grill on and continue cooking, checking often, until the tops are golden brown. Remove from the oven, season and serve hot, scattered with feta (if you’re using it) plus seasoning and extra herbs.