Smothered Chicken Breasts in Onion Gravy

Name: Smothered Chicken Breasts in Onion Gravy
Cook time: 55 min
Total time: 55 min
Cuisine: American
Ingredients: 2 tablespoons whole-wheat flour; 1 teaspoon onion powder; 1 teaspoon smoked paprika; 0.25 teaspoon cayenne pepper; 0.75 teaspoon kosher salt; 0.25 teaspoon ground pepper, divided; 1 pound boneless, skinless chicken breasts, trimmed; 2 tablespoons extra-virgin olive oil, divided; 3 medium sweet onions, sliced; 3 cloves garlic, minced; 1 cup low-sodium chicken broth; 1 tablespoon chopped fresh thyme; 1 bay leaf