Never-Fails Baked Chicken

Ingredients

• 2 teaspoons seasoned salt
• 2 teaspoons dried rosemary
• 2 teaspoons garlic powder
• 2 teaspoons onion powder
• 1 teaspoon black pepper
• 4 pounds chicken thighs, skin-on and bone-in, patted dry
• 1/3 cup pure maple syrup
• 1 large onion, thinly sliced
• 1/2 cup unsalted butter, cut into slices
• 2 tablespoons Worcestershire sauce
• paprika, to taste
• parsley leaves, to taste, for garnish
• grape tomatoes, to taste, sliced, for garnish