<p>Cut the bananas into pieces and place them in a large mixing bowl with the butter and sugar, along with the zest of one orange. Incorporate the eggs one by one, mixing well after each addition.</p><p dir="auto" class="whitespace-break-spaces">Sift together the flour and baking powder, then pour them over the banana mixture and gently fold using a spatula.</p><p dir="auto" class="whitespace-break-spaces">Add the chocolate chips, distributing them evenly.</p><p> </p><p dir="auto" class="whitespace-break-spaces">Pour the batter into a loaf pan previously lined with parchment paper. </p><p dir="auto" class="whitespace-break-spaces">Bake until the cake is puffed and well golden.</p>