Southern Smothered Chicken with Onion Gravy

Ingredients

• 3 bone-in, skin-on chicken thighs, about 1 1/2 lb (680 g)
• 3 bone-in chicken drumsticks, about 1 1/4 lb (565 g)
• 1/2 cup (65 g) all-purpose flour
• 1 teaspoon smoked paprika
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1/4 teaspoon cayenne pepper
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 3 tablespoons vegetable oil, plus more if needed
• 2 medium yellow onions, thinly sliced
• 3 garlic cloves, minced
• 2 tablespoons reserved seasoned flour
• 2 cups (480 ml) low-sodium chicken broth
• 3 fresh thyme sprigs
• 1 bay leaf
• 1 tablespoon chopped green onion or parsley, for garnish