Food price inflation is a global phenomenon.
FT.com / In depth / Rising cost of food
Chickens cost more when the price of the grain they are fed goes up.
We can expect a price rise in may foodstuffs now that Russia has stopped grain exports. (Fires in Russia - drought in N America)
When scarcity strikes, prices rise.
We will have to bear this at a time when wage increases are frozen.
If you haven't already stocked as much non perishable food as you can afford and store, you may well have to resort to browsing for those 'wartime rationing recipes'