thank you for your response. I’ve already checked out itemWidth. Unfortunately, this does not resolve my problem. Although I am able to align the legends (and thereby the pie charts), choosing a rather large itemWidth (e.g. 280 as in your example) results in having a single legend item per line.
This, in turn, results in legend items overflowing the canvas and hence being cut off (see http://canvasjs.com/docs/charts/chart-options/legend/#comment-81298 where you already answered me and linked to this thread).
I’m looking forward to future releases.