The pies are larger for the bones that are selected in the weights view. Otherwise there is no way to make them larger in 3.8, sorry.
对于在权重视图中选择的骨骼，派子更大。 否则，无法在3.8中将其放大。

In v4 (currently in beta) the "interface scale" setting makes the entire UI larger for high resolution displays.
在第4版中 (当前为beta) ，“界面比例”设置使整个用户界面更大，以实现高分辨率 显示

I do agree that we can improve the size of the pies when zoomed out, even in v4. I think the best way to do this is for the "bone scale" setting to affect the size of the pies. That setting has been greatly improved in v4 in other ways but we'll make it also affect pies in version 4.0.11-beta.
我确实同意，即使在v4中，我们也可以改善缩小的饼图大小。 我认为最好的方法是通过“骨骼比例”设置来影响馅饼的大小。 在v4中，该设置已经以其他方式得到了很大的改进，但是我们将使其在4.0.11-beta版本中也影响到pies。

You are welcome! In 4.0.11-beta (now available) the pies don't get smaller when you zoom out. This means they should always be large enough to see what is going on.
别客气！ 在4.0.11-beta（现在可用）中，缩小时派不会变小。 这意味着它们应该始终足够大以查看发生了什么。