This is not a glitch, just an observation and request:

On easy level you start with 0 food.

It takes a little time for first time players to get used to the mechanics and concepts of the game. If you don't happen to get enough mushrooms early on, or don't realize that the Chief can produce food (or how to accomplish it), then you feel the stress of having a short food supply.

Suggestion: Start the easy level with a small food reserve.
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Just starting: Plant Tycoon