Preheat oven to 400°F (200°C).
If sausage isn't cooked, cook it first (air fry or sauté).
Chop veggies and toss in a big bowl with 1-2 tbsp olive oil + Cajun seasoning.
Slice sausage, then toss with shrimp, ½ tbsp olive oil + Cajun seasoning in another bowl.
Layer everything onto a baking sheet.
Bake for 15 minutes.