Isn't it normally two food per person? It seems to be three food per person in this scenario.. My cities have a hard time growing and this sure would explain it, just checking if it's on purpose.
Also, the Scottish economy was suffering heavily through the war as I had to crank up happiness to 30% leaving me with a deficit even with science at 0%. Now that I made peace with the English I can move happiness down and start researching a bit. Clearly war weariness is a major issue in this game, at least under default government..