Is there any way to do this? I have a pie with lots of sections and it looks a bit cramped. Thanks!
Pie charts with "lots of sections" are almost always cramped / unreadable, so if I were you I'd switch to bar charts, dot plots or similar to show percentages.
Other that that I believe there's unfortunately not too much more you can do, other than render your "cramped pies" with a few lines of R code instead.