Preheat the oven to 400°F (204°C) and spray a 7-cavity muffin tin with nonstick cooking spray.
Place the halved dates in a microwave-safe bowl and heat about 30 seconds until just warm.
Transfer the warm dates to a food processor. Add the grated zucchini, applesauce, almond milk, vanilla, and egg (or egg substitute). Blend until combined, scraping the sides as needed; small date pieces remaining are fine.
In a medium bowl, whisk together the oat flour, cinnamon, baking powder, and salt.
Pour the zucchini-date mixture into the dry ingredients and stir until just combined, then fold in the mini chocolate chips.
Divide the batter among the 7 prepared muffin cavities, filling each just over half full (an ice cream scoop helps create domed tops).
Bake for 20–22 minutes, or until the tops are golden and a toothpick inserted into the center comes out clean.
Let the muffins cool in the pan for about 30 minutes, run a knife around the edges, then transfer the muffins to a cooling rack to cool completely.
Serve and enjoy.