Preheat the oven to 180 ºC or 350 ºF.
Dice sweet potato and transfer to a baking tray, sprinkle with 1 tablespoon olive oil, salt and black pepper and roast for 10 minutes, flip over and add diced eggplants, sprinkle with 1 tablespoon olive oil and roast for 15 more minutes or until golden brown, flipping eggplants once.
In the meantime, chop onion, garlic and chili pepper. Over medium hit, warm a lug of vegetable oil in a skillet. Add onion, garlic and chilli. Cook for about 8-10 minutes or until the onion is soft. Add all the spices and cook for 3 more minutes. Add ground almonds, diced tomatoes with all the juice, coconut milk and water. Bring to a boil and simmer for 30 minutes, adding eggplant and sweet potato dices 3 minutes before the end.
Make parathas: In a bowl, mix flour with salt, 1 teaspoon vegetable oil and milk. Start with a small amount and add milk gradually while kneading, until the dough is smooth. Let it rest for 10 minutes.
Prepare the filling: break feta cheese with your fingers and chop the onion.
Divide the dough into 4 parts and thinly roll them with a rolling pin over a flour-dusted surface. Put the filling on two of them and season with black pepper. Cover with remaining flat-breads and roll them again.
Heat 1 teaspoon vegetable oil over medium heat. Fry each paratha for about 5 minutes, flipping every 30 seconds and adding oil if needed until crispy golden.
Season the curry with salt and pepper to taste. Serve with a lug of Greek yoghurt and parathas (or rice). Enjoy!