As many people have Hulu, it’s a valid question to ask whether it’s on there. However, at the time of writing, it doesn’t look like it is.
On the program page, seasons 1 and 2 are shown as available, but the fourth one isn’t. All is not lost, however, as there are other options.
For example, you can watch on Sling TV, and make the most of the latest episodes streaming during their Happy Hour promotion, which allows for free TV between 5pm and midnight.
Alternatively, fuboTV offers the latest episodes or the whole season so far to binge watch, and the first 7 days are a free trial.