I would just substitute gluten free flour with some xanthan gum. Mennonite Girls Can Cook: Zuchinni Pineapple Loaf. I like the addition of pineapple. I would make this again (makes 2 loaves which is always a plus)
Pineapple Zucchini Bread — best zucchini bread recipe I've ever tried! The pineapples and salt make this uniquely delicious. The crunchy crust with super moist inside is perfection. Thanks to The Mighty Mrs.
Zucchini Pineapple Bread Recipe -Meals are even more memorable when I complement them with this light garden-fresh bread. The zucchini makes it so moist and tender.and the pineapple lends a delicate tropical twist to every delicious slice.