1. Coat a 15x10x1 inch pan with cooking spray. Place eggplant, zucchini, onions, yellow pepper and parsley in the pan.
2. In a small bowl, stir together garlic, oil, salt and pepper. Drizzle over vegetables; toss to coat.
3. Roast, uncovered, in a 450 oven about 20 minutes or until veggies are tender and lightly browned, stirring once. Stir in tomatoes and lemon juice. Roast, uncovered, for 8 to 10 minutes more or until tomatoes are very soft and starting to juice out.