For an extra challenge, enable Hunger Overhaul. 

This will divide the food and saturation values of all in-game foods by 2 and 1.5, respectivly.

It will also add new worldgen to villages (may not work in existing worlds), allow you to find food in dungoen chests (may not work in existing worlds), reduce the amount of food you need to heal (Default is 18 points or more, or 9 drumsticks. Reduced to 15, or 7.5 Drumsticks), make you constatly (but very slowly) lose hunger at all times, and slightly increase the rate at which food drains whil eperforming actions (mining, sprinting, etc.)

Probably some other stuff I forgot about too.