Preheat oven to 425° F. Place the chunks of potatoes onto a rimmed baking sheet. Drizzle the olive oil onto the potatoes along with the dried oregano, salt, and pepper. Use your hands to toss the potatoes until they're coated in the oil and seasoning.

Roast the potatoes for 15 minutes, then remove them from the oven and use a spatula to toss them around. Place them back in the oven to roast for another 10 minutes.

After 10 minutes, remove them from the oven again and mix in the garlic. Roast for another 3-5 minutes or until the potatoes are tender.

Remove the potatoes from the oven and squeeze fresh lemon juice all over them. Sprinkle on the lemon zest, fresh herbs, and crumbled feta. Finish with a sprinkle of flaky sea salt and serve off of the baking sheet or transfer them to a serving dish.