Heat oven to 350°F and grease a 9-inch loaf pan. Line pan with parchment paper so it hangs over the two long sides. This will make it easier to remove.
In a large bowl, whisk together the 1 3/4 cups flour, 2 teaspoons baking powder, 1 1/2 teaspoons cinnamon, 1/2 teaspoon baking soda, 1/2 teaspoon kosher salt, and 1/2 teaspoon nutmeg.
In a separate medium mixing bowl, whisk together the 1 cup brown sugar, 1/2 cup oil, 6 tablespoons liquid egg replacer, 1/4 cup applesauce, and 2 teaspoons lemon juice.
Pour the wet ingredients into the dry ingredients and stir with a silicone spatula until batter is smooth and sticky. Fold in the zucchini. Remember, this recipe is gluten-free, so there is no risk of making the bread tough by beating it too long.
Scrape the batter into the loaf pan. Bake in the center of the oven until golden and firm, it should feel slightly springy when touched with your finger, about 50-60 minutes. A toothpick inserted in the middle should come out clean. Let cool for at least 30 minutes before removing from the pan.