Line a sheet pan with parchment paper and preheat oven to 425
Chop your vegetables into small pieces (tomatoes can be left whole)
Mix the vegetables with olive oil and salt on the sheet pan
Nestle the fish in and spread 1 - 1 1/2 tbsp of pesto per piece of fish
Bake 12-15 minutes or until an instant read thermometer registers 135-140 degrees for the fish. If the vegetables are not done take the fish off and cover and let the vegetables cook for an additional 5 minutes.
Option to serve extra pesto and with toasted bread or rice or pasta