Meat would get more expensive yes. But energy production is perfectly capable of switching over without a bump. And non meat farm products would actually become cheaper as supply increases. We’re not magically causing a drought with such a changeover, at least not any extra ones.
Think of the people in the world that are just getting by with just enough food to surive. If there were artificially made more expensive by world requirements on emissions and energy usage, this would make the things the poorest need too expensive for them to get and a simple drought would push them into starvation.
You have yet to describe a mechanism by which their food prices would rise.
Do you understand how the plan to save the environment would make everything more expensive?