Preheat oven to 400 degrees.
Slice all the veggies and sausage and add them to the cookie sheet.
Use the basting brush to coat all of the veggies and the sausage with the extra virgin olive oil.
Sprinkle on the garlic powder, salt and pepper.
Put the cookie sheet in the oven on the middle rack. Cook for 15 minutes.
After 15 minutes, remove the cookie sheet from the oven and flip veggies and sausage.
Add back to the oven for 15 minutes. Add an extra 5 minutes if you want more char.
When time is up, remove the sheet pan and sprinkle everything with fresh, cut parsley. Serve immediately.