I'd be a pickle.

Cucumber because I love cucumbers and zucchini doesn't bring me that much joy

Zucchini for me - although I'm not a huge fan of any member of the cucurbitae family. They've all got a taste (including the melons) that is overpoweringly strong to me that I just really can't stand. I think it's a genetic thing, like how some people detect a strong taste of soap in cilantro and other people don't.

Although, I guess it doesn't really matter if I taste good to myself or not, so maybe it doesn't matter?

Zucchini

but my real friends would call me courgette.

A cucumber, so I can fulfill my life-long aspiration to perform the perfect Pickle Rick cosplay.

I love the flavor of cucumbers, but for overall versatility, I'd have to be a zucchini. Sauteed, roasted, baked into bread, zucchini just has more body and is actually filling.