Jamaican Curry Chicken and Potatoes

Name: Jamaican Curry Chicken and Potatoes
Cook time: 1 h 30 min
Total time: 1 h 30 min
Cuisine: Caribbean
Ingredients: 3 pounds bone-in, skin-on chicken legs and thighs, skin removed; 1 tablespoon garlic powder; Kosher salt and black pepper; 2 tablespoons olive oil, plus more as needed; 1 large onion, sliced; 4 garlic cloves, minced; 2 tablespoons Jamaican hot curry powder, such as Jamaican Choice or Grace, plus more as needed; 1 Scotch bonnet or habanero pepper; 4 medium Yukon Gold potatoes, washed and quartered; 1 to 2 quarts chicken stock (reduce or add liquid depending on pot size); 1 dried bay leaf; 2 fresh thyme sprigs; 1/4 cup cornstarch; White rice, for serving