Climate change influences the weather and the weather influences crops. So stating that food production is affected by climate change is stating the obvious.

Modern agriculture has made it possible however to produce food even under poor weather conditions. Maize varieties have been made drought tolerant. One needs to invest in soil fertility and avoid overgrazing. The farmer needs to plan carefully in order to spread his risk so he can produce food even with bad weather conditions. This is the way food crops are grown successfully in many sub-saharan countries. Think of Zambia, South Africa and Zimbabwe before land reform.

Modern farming can adapt to climate change but the government of the day needs to allow for this. Then there will be plenty food. Mark my words.