Preheat your oven to 400°F (200°C) and prepare a large rimmed baking sheet or a 9x13 inch baking dish.
Slice the chicken breast into 1-inch cubes and place them in a large mixing bowl.
Dice the eggplant, zucchini, and red bell pepper into uniform 1-inch pieces, then finely chop the onion and mince the garlic.
In a small bowl, whisk together the tomato puree, extra virgin olive oil, herbes de Provence, sea salt, and black pepper until well combined.
Add the chopped vegetables to the bowl with the chicken, pour the tomato-herb mixture over the top, and toss until everything is evenly coated.
Spread the mixture in a single layer in the baking dish and roast for 25 to 30 minutes until the chicken is cooked through and the vegetables are tender.
Remove from the oven and garnish with freshly torn basil leaves before serving.