Preheat oven to 400°F and line a large baking sheet with parchment paper.
Dice the chicken breast, eggplant, zucchini, and red bell pepper into uniform 1-inch cubes.
In a large mixing bowl, combine the diced chicken and vegetables with olive oil, minced garlic, dried thyme, dried oregano, sea salt, and black pepper.
Toss everything thoroughly until the ingredients are evenly coated in the oil and spices.
Spread the mixture onto the prepared baking sheet in a single layer, ensuring enough space for roasting.
Roast for 20 minutes, then remove from the oven and stir in the tomato puree until the vegetables are well coated.
Return to the oven for an additional 5 minutes until the sauce has thickened and the chicken is fully cooked.
Garnish with freshly chopped basil and serve warm.