Preheat the oven to 400F.
Lay the dough out across a 10" tart pan.
Spread the spinach-artichoke dip across the dough.
Lay the zucchini slices out in a circular pattern until the entire tart is covered.
Sprinkle the spinach over the top and season with garlic powder and pepper.
Bake at 400F until crust is golden and zucchini is soft (about 30-45 minutes).