Zucchini courgette is a Green food. Green foods are safe to eat as a regular part of a diet.
Guideline related quotes related to Non-Starchy and Green throughout Geoff Bond's publications.
Eat at least 2 3/4 lbs of mixed salad and vegetables per day, consisting of "Green-Green” and “Green” foods. Of these, at least 3/4 lb should be mixed salad. Also include at least 5 cups of “Green-Green” leafy vegetables or 2 1/2 cups of other vegetables per week. ~Paleo in a Nutshell p.102
Specific references to Zucchini courgette throughout Geoff Bond's publications.
With regard to plant food, it is always best to eat it as soon as possible after harvesting and to eat it raw. That is why we put the emphasis on the consumption of salads and for them to be as fresh as possible. Be imaginative—many vegetables can form part of a mixed salad, including chopped broccoli, cauliflower, cabbage, zucchini, and leeks. ~Paleo in a Nutshell p.91