Crazy world! First problems during the pandemic was when toilet paper was out and people started stock piling soap and toilet paper at home like crazy. It makes sense that food will be the main issue during the second and third wave of corona. Better to prepare ourselfs already and building up stockpiles. This will be so sad once people start selling a bag of apples for 100$. We should try to become self suficient again as a nation and not rely on imports all around the world.
The extended shortage of toilet paper was caused by a sudden shift in consumer demand. The country didnt suddenly start using more, its just the place where demand originated changed. Production capacity is more than adequate, but it was split between industrial production and personal production (i.e., work and home). When offices and businesses suddenly didnt need the industrial production anymore, producers had to shift production to meet the i teases home consumption. That takes time, the supply chains are large. But things have reached an equilibrium again.
As it goes for food production, were not really reliant on the rest of the world, so theres no concern there. The US produces enough to feed itself and is a net exporter of foodstuffs.