Understanding how food prices change can be a useful way to learn about supply demand and local markets.
Chicken is a good example because prices can vary between cities and can change over time. Students can collect price information from different markets and compare the results to understand how local economic factors affect consumers.
For example you can compare farm gate prices wholesale prices live chicken prices and retail meat prices. Tracking these figures over time can also help identify simple market trends.
I recently found Today Chicken Rates Pakistan useful for looking at city wise chicken price information and comparing rates across different locations.
I think this type of real world data can make lessons about economics statistics and data analysis much more practical.