Chrome actually has a built in Task Manager which can be super useful for this sort of thing.

For example, it allows one to see CPU & Mem usage per tab. It also has the ability to kill problematic tabs, extensions and background processes with ease.

Chrome's Task Manager can be found under Menu Icon -> (More) Tools.

In fact, this feature was being used often enough, that I ended up assigning it a shortcut. (for me: command-shift-1)