For the pasta salad with roasted vegetables, first cook the pasta in salted water until al dente and drain.
Preheat the oven to 200 °C.
Finely dice the zucchini, bell bell pepper and onion, place on a baking sheet with baking paper and sprinkle with 1 tablespoon olive oil. Roast for 25 minutes or until vegetables are cooked, turning once.
Whisk together vinegar, oil and mayonnaise.
Mix the roasted vegetables with the dressing and remaining ingredients in a large bowl.
Fold in the pasta and serve the pasta salad with roasted vegetables immediately.