Preheat oven to 400 degrees F.
Preheat a cast iron skillet with 1 tbsp. olive oil.
Spray a large sheet pan with a light layer of cooking spray.
Place all vegetables in a large bowl. Pour in 3 tbsp. olive oil, seasonings, and salt and pepper. Toss vegetables to coat.
Spread vegetables in a single layer on the sheet pan and place in the oven for about 5 minutes, or until slightly tender.
Season steaks with salt and pepper.
Place steaks on the heated skillet, allowing to sear for about 3 minutes on each side until a light brown crust forms.
Move vegetables on the sheet pan to make room for steaks. Add them to the pan and place in the oven. Allow to cook for about 8 to 12 minutes, depending on how done you like your steak.