In the same skillet, heat the olive oil until shimmering. Season the chicken drumsticks with salt and pepper, add them to the skillet and cook over moderately high heat, turning, until golden brown all over, about 10 minutes. Add the onion and cook, stirring occasionally, until softened, about 3 minutes. Add the garlic and cook for 1 minute. Add the broth and crushed coriander and bring to a boil. Cover and cook over moderately low heat until the chicken is cooked through, about 15 minutes.