My strong belief is that developed and wealthy countries will find a way to take care of their own business. Poor countries will suffer the most as food will be most likely exported on massive scale.
Surely we're slowly entering difficult times. For many very difficult times ahead. So I would expect shortages of food. But not because of some Grand Solar Minimum, but mostly because entire world structure is breaking into pieces. And that will affect everything. Food chains will be surely affected too. Badly.
ps.
I've noticed that you're part of Economics community. Cool. Do you know each other with 
Cheers
Piotr
RE: Are We in the Early Stages of a Global Food Crisis?