In a blender combine vanilla greek yogurt, orange extract and the orange and blend on high until smooth,
Pour into ninja creami container and freeze for 24 hours.
Once frozen, place in the ninja creami and press ice cream.
After the first spin it will be crumbly so add in 1/4 cup milk and press respin.
Then add in chocolate chips down the middle of the container and either press mix in if you like the consistency already, or press respin if you want it a bit creamier.
Notes
I like the Vanilla Too Good Greek Yogurt but any works!