Place the potato wedges, 3 tablespoons of olive oil, a big pinch of kosher salt, and a few cracks of black pepper into a zip-top bag. Shake to coat evenly.
Spread the potatoes out on a Silpat- or parchment-lined baking sheet in a single layer.
Bake for 30–35 minutes, flipping once halfway through, until golden brown and crispy.
While the fries bake, whisk the remaining 3 tablespoons olive oil, minced garlic, parsley, and oregano together in a large bowl.
When the fries are hot out of the oven, immediately toss them in the herb-garlic oil.
Arrange the fries on a platter, sprinkle with crumbled feta, and add dollops of tzatziki over the top.
Serve immediately with lemon wedges on the side. Adjust salt as needed and dig in!
Notes
Tzatziki is one of my favorite dips for SO many dishes. It is absolutely instrumental in giving these fries a Greek flair.