Preheat the oven to 180°C/350°F. Dice the peppers and tomatoes. Slice the zucchini and quarter the mushrooms. Heat some olive oil in a frying pan. Add the vegetables and sauté with some salt, pepper, and paprika powder.
Whisk eggs with water. Season with salt and pepper. Finely chop the parsley, then add to the eggs.
Add the vegetables to a baking dish, then pour the eggs over it. Let bake in the oven at 180°C/350°F for approx. 20 min. Garnish with fresh parsley.