Preheat Oven: Set oven to 200°C (400°F). Line a baking tray with parchment paper. Prepare Glaze: In a bowl, whisk maple syrup, soy sauce, olive oil, Dijon mustard, and minced garlic until smooth.
Arrange Ingredients: Place chicken thighs and vegetables on the prepared tray. Drizzle with glaze and toss to coat evenly.
Roast: Bake for 35 minutes, or until chicken reaches an internal temperature of 75°C (165°F) and vegetables are tender.
Finish & Serve: Brush remaining glaze over the chicken and roast an additional 5 minutes for a sticky, golden finish.