[Brian]

Click on a row to select it, then press the Escape key to switch out of row-editing mode and into row-selection mode.

Once you have a row selected like this, you can hit command-plus to increase the font size. (Which will actually increase the font size of all the rows - so all the next actions, all the available actions, and so forth will all get bigger when you do this.)

You can do a similar set of steps for the items in the sidebar if those are also hard to read.