This extension is a customized version of the original jupyterlab_variableinspector, that works with Almond.
Install it with
$ jupyter labextension install @almond-sh/jupyterlab_variableinspector
Then pass --variable-inspector as an option when installing Almond (>= 0.10.9):
$ cs launch almond -- --variable-inspector --install
Lastly, start JupyterLab, and open the variable inspector panel by right-clicking in a cell, then "Open Variable Inspector".