Preheat the oven to 200°C (390°F).
Grease a baking dish with ½ tablespoon of olive oil.
Start by arranging the sliced tomatoes at the bottom of the greased baking dish.
Sprinkle half of chopped thyme, garlic, salt, and black pepper evenly over the vegetables.
Drizzle the tomatoes with ¼ of olive oil, ensuring they are lightly coated.
Layer half of the sliced potatoes on top of the tomatoes.
Arrange sliced zucchini, followed by another layer of potatoes, red pepper, and red onion.
Sprinkle chopped thyme, garlic, salt, and black pepper evenly over each layer.
Drizzle the remaining olive oil, ensuring everything is lightly coated. Cover the baking dish with aluminum foil.
Place the covered dish in the preheated oven and roast for about 45-50 minutes, or until the vegetables are tender and lightly browned.
Once cooked, remove the foil and allow the vegetables to cool slightly before serving.
If the vegetables are not browned enough, roast them for another 10 minutes, until they are slightly charred.
Once cooked, remove the foil and allow the vegetables to cool slightly before serving.