So far we've found that for a decision to be free in this sense, it has to satisfy two conditions: first, it can't be predetermined, and second it can't be random

It's a real possibility that neuroscientists could discover that we don't have free will. I'm just not so sure that they have discovered this.

So it seems to me just confused to say that if nothing caused you to choose chocolate, then you didn't choose chocolate.

The claim is that all of us sometimes fail to be free. We are all sometimes driven by things like unconscious plans. But we aren't always driven by such things.