Not specifically. The current high price of food is due to the market being depressed and people investing more in consumables and food, and the fact that the value of the dollar sucks.
However, the coming oil and coal shortage will affect the food supply. nightwork4: Food is not something you can stockpile. Yes.. canned food will keep, but in terms of growing/raising it to sustain the whole population.... too many things we use in growing food is based on our dependence on fossil fuels. Fertillizers, for instance are largely fossil fuel based. Before the industrial revolution, our food production could sustain perhaps 10% of the population we have now. The amount of farmable land has gone down since then, but basic agricultural technology has grown, to let's be generous and say we can sustain about 30% of the current worlds population if all our fossil fuels went away. In reality, it might be closer to 20%. And peak oil has already passed. Our production of oil is not going to grow much and the demand is going nowhere but up. Higher gas prices are inevitable at this point and that means things like transporting the food is going to get more expensive too, which will be passed along to the consumer. It's not greed, but it is market forces at work. We've been living beyond our means for close to a hundred years. The bill's about to come due. In answer to your question: High prices aren't a direct indication, but a food shortage IS coming. The only question is: when and that depends on oil.