Put the peeled orange, the eggs, the olive oil, the vanilla extract & the orange juice into a food processor or a blender. Blend for 20 seconds.

Add the orange zest and blend for another 10 sec.

Sift flour, baking powder, baking soda and salt into a large mixing bowl. Add the sugar and whisk.

Mix the liquid with the flour mixture. Stir until well combined.

Using a spatula fold the chocolate chips into the mixture.

Fill 24 to 26 muffin cups.

Bake in a preheated oven, at 180°C / 350° F, for 25 to 30 min until a skewer comes out clean. Enjoy!