Add everything except chocolate chips to a high powered blender.
Blend until smooth, if you don't have a high-powered blender you may have to stop and stir several times, but it should work just fine! You may need to add more liquid but try to add the minimum amount possible. The more liquid you add the more liquidity your product will be.
Once it is smooth, add half your chocolate chips and blend for no more than 10 seconds to get chunks of chocolate in the shake!
Use the remaining chocolate chips to top off your shake and enjoy!