Yes, but you can't get the original control points back for the selection you already made. However, you can add to, sutbract from, or intersect with your current selection using the controls in the Tool Options.
It might also be possible to do Select > to Path, although it will create extra nodes, then you could adjust it as a path, then turn the path into a selection by right clicking it in the Paths panel, and choose Path to Selection.
If you find yourself doing this kind of thing often, and you need a more reliable method, you can learn to use the Paths Tool to create paths which you can always go back to for adjustment. You can turn any path into a selection by right clicking it in the Paths panel, and choose Path to Selection. It's also possible to have many paths in a document.
The Paths Tool is more sophisticated than the Lasso Tool, and allows you to create and manipulate Bézier curves as well as having nodes you can adjust.