Lemony zucchini and tuna spaghetti

I picked the first zucchini yesterday! Casting around for ideas for something new to make, I remembered a dish I ate in 13 years ago in Stromboli, when we went to a seafood trattoria called Ai Gechi one night. We had the two girls in tow (then 15 and 18) so our 50-euros-a-day spending money…