Place 4 bone-in chicken thighs, 3 sliced pears, 2 sliced shallots, and 1 halved garlic bulb onto a parchment-lined baking sheet. Add 2 tablespoons olive oil, 1 tablespoon maple syrup, 1 teaspoon garam masala, 1/2 teaspoon ground ginger, and 1/2 teaspoon red pepper flakes and toss to coat evenly. Really get in there with your hands to evenly distribute the spices!