Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the chicken breast, eggplant, zucchini, and red bell pepper into uniform 1-inch cubes to ensure even cooking.
Mince the garlic cloves and finely chop the fresh thyme and rosemary leaves.
In a large mixing bowl, toss the chicken cubes and diced vegetables with the extra virgin olive oil, minced garlic, sea salt, black pepper, thyme, and rosemary until thoroughly coated.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded so they roast rather than steam.
Roast in the oven for 15 minutes, then remove the tray and carefully pour the crushed tomatoes over the mixture, tossing gently with a spatula to combine.
Return the tray to the oven and roast for an additional 12 minutes until the chicken is cooked through and the vegetables are tender and slightly caramelized.
Remove from the oven and garnish with hand-torn fresh basil leaves before serving warm.