Peel the potatoes, cut them into long wedges, and pat them dry.
Whisk the lemon juice, olive oil, garlic, broth, oregano, paprika, salt, and pepper until well combined.
Toss the potato wedges in the mixture until fully coated. Add semolina if using, and mix gently so it adheres.
Spread the potatoes in a single layer in a baking dish and pour all remaining marinade over them.
Roast at 375°F (190°C) for about 1 hour, then flip each wedge.
Continue roasting for another 45–60 minutes until the liquid evaporates and the potatoes turn golden and crispy.
For extra crispiness, broil for 3–5 minutes at the end.
Garnish with fresh parsley and serve with lemon slices.