Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Cut the aubergine into 1-inch cubes and slice the chicken breast into even, bite-sized strips.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
In a large mixing bowl, combine the chicken, aubergine, minced garlic, rosemary, and thyme.
Drizzle with extra virgin olive oil and season with sea salt and black pepper, tossing thoroughly to ensure every piece is well coated.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded to allow for proper browning.
Roast in the center of the oven for 20 to 25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the aubergine is golden and tender.
Remove from the oven and drizzle with fresh lemon juice before serving warm.