Preheat your oven to 200°C/390°F (180°C fan-forced).
Peel the potatoes and cut large potatoes into thick wedges, approximately 3 cm (1.2 inches) thick. Cut medium potatoes into thirds.
Place the potatoes in a large roasting pan.
Add the chicken broth, olive oil, lemon juice, grated garlic, oregano, and salt.
Toss everything thoroughly until the potatoes are evenly coated.
Roast for 20 minutes.
Remove the pan from the oven and carefully turn the potatoes.
Return to the oven and roast for another 25 to 30 minutes until most of the liquid has been absorbed or evaporated.
For extra crispy Greek Lemon Potatoes, transfer the potatoes to a separate baking tray.
Tilt the original roasting pan and carefully spoon off most of the flavorful oil. Drizzle the oil over the potatoes.
Roast the potatoes for an additional 35 to 40 minutes, turning once or twice, until deeply golden and slightly crisp around the edges.
During the final 5 to 10 minutes, place the original roasting pan back in the oven so the remaining garlic juices reduce and caramelize.
Transfer the potatoes to a serving platter.
Drizzle the reduced garlic pan juices over the potatoes.
Garnish with lemon wedges and fresh oregano leaves if desired, then serve immediately.