PLACE the tomatoes onto an oven tray, spray with oil then sprinkle with pepper. Place under a hot grill for 5 minutes until heated through.
MEANWHILE bring a saucepan of water to the boil with the vinegar. Reduce to a slight simmer and add the eggs. Allow to cook for 3-4 minutes, or until cooked to your liking. Remove from the water with a slotted spoon and drain.
SPREAD the toast with the VEGEMITE and place onto the serving plate and top each with an egg. Place the tomatoes onto the plates and sprinkle with the crumbled feta. Season to taste. Serve immediately.