Preheat oven to 200C, and line a tray with baking paper. Dice an eggplant into 1-inch cubes. Combine 1tsp garam masala, 1 tsp ground coriander, 1/2 tsp chilli flakes and 1/4 tsp turmeric in a bowl. Add the eggplant and toss to coat. Spread onto the lined tray and drizzle with olive oil. Bake for 20 to 30 minutes, or until cooked through and golden brown.