Preheat the oven to 425°
Slice the sausage links into ½in rounds. Prep all of the vegetables based on the descriptions above. The key is to have everything about the same size to it cooks evenly.
In a large bowl, add all of the sausage and vegetables. Drizzle with olive oil and liberally sprinkle on cajun seasoning. Stir to coat.
Dump all of the ingredients on a baking sheet (lining with parchment is optional), and bake for 30-35 minutes, flipping halfway through.
Check to make sure potatoes are fork tender, as this takes the longest to cook. Remove from oven, sprinkle with parsley, and serve immediately over rice, quinoa, barley, or cauliflower rice.