Spray a standard large restaurant baking pan (25.75x17.75x3.5-Inch) with oil and set it aside.
As you complete each batch, scrape it into the baking pan. Continue until all the chickpea mixture is processed.
Press the mixture to compress in the baking pan, smoothing the top. It should be about 3-4" deep.
Bake the chickpea loaf for 30-40 minutes.