1. Preheat the oven to 180 °C (350 °F).
2. Peel and crush the garlic cloves.
Slice the leeks and rinse them.
3. Peel and wash the carrots, then cut them into thin sticks.
4. Heat the first tablespoon of oil in a sauté pan (or wok) and add all the vegetables.
5. Season with salt, cover, and cook for about 5 minutes, stirring occasionally. If the vegetables stick, add a little water.
6. Meanwhile, remove the skin from the chicken thighs.
7. In a bowl, mix together the honey, the other tablespoon of oil, and the soy sauce.
8. Cut 4 sheets of parchment paper. On each one, place 1/4 of the vegetable mixture, add 1 chicken thigh, 2 teaspoons of cinnamon (adjust according to your taste), 1 star anise, and a quarter of the garlic. Drizzle with a little sauce.
9. Fold the parchment paper to form a packet, place them on a baking sheet, and bake for 25 minutes.