Cook the sweet potato for 3-4 mins in a pot of boiling water, then drain. Heat the ½ tbsp of the oil in a pan, over medium heat.
Add the sweet potato, zucchini, onion and garlic, and sauté for about 5 mins, until cooked and browned. Season to taste with salt & pepper, and set aside.
Heat the remaining oil in the pan and fry the eggs to your liking. Divide the vegetables between 4 plates, top with fried eggs and sprinkle with parsley.
Season with cayenne pepper, salt & pepper, to taste and serve.