Preheat oven to 450 degrees.
Place the potato wedges, 3 tablespoons of olive oil and salt and pepper in a zip top bag and shake to combine. Transfer the potatoes to a sil-pat lined baking sheet and evenly spread out the wedges. Transfer to the oven and bake for 30-35 minutes, flipping once, until evenly baked and golden brown.
Whisk remaining olive oil, chopped garlic, parsley and oregano in a large bowl. Add the mixture to the hot fries and toss to combine. Taste and season with extra salt and pepper as neededArrange on a platter. Sprinkle with feta and dollops of tzatziki and serve alongside lemon wedges. Adjust salt as needed.