Preheat your oven to 425 degrees and line a large rimmed baking sheet with parchment paper.
Add the sweet potatoes and sausage and arrange in a single layer. Roast for about 15 minutes, stirring halfway, or until potatoes soften and the sausage slightly browns.
Meanwhile, in a very large bowl combine all the remaining ingredients and toss well to coat. If the sheet pan is not large enough to fit all ingredients without overcrowding, then divide everything equally onto 2 pans.
Arrange the shrimp and veggies on your sheet pan, around the sweet potatoes, and sausage as shown, then continue to roast until your shrimp is cooked through, about 10 minutes more depending on size.
Garnish with freshly chopped parsley and serve with lemon wedges.
Enjoy!