2.Cook spaghetti in a large saucepan of boiling water until tender. Add broccoli and peas to water for the last 5 minutes of pasta cooking time. Drain; reserve 1/4 cup cooking liquid.
3.Meanwhile, heat half the oil in a large frying pan; cook breadcrumbs and garlic until browned and crisp. Remove from pan. Heat remaining oil in same cleaned pan; cook zucchini, anchovy and onions until zucchini is tender.
4.Combine spaghetti mixture and zucchini mixture in a large bowl with rind, juice and reserved cooking liquid. Season to taste.