One Tray Honey Soy Chicken

• 400 g chicken thigh fillets, cut in half
• 200 g mushrooms (e.g. button, cup, brown), sliced
• 2 bunches of broccolini
• 500 g microwavable brown rice
• 2 tsp sesame seeds, to serve (optional)
• 2 tbsp honey
• 3 tbsp soy sauce (or tamari for GF)
• 2 tbsp lemon, juiced
• 2 cloves garlic, crushed