Banana Chocolate Chip Muffins

Name: Banana Chocolate Chip Muffins
Ingredients: 1 3/4 cups ( 236 g ) all-purpose flour; 1 teaspoon baking powder; 1/2 teaspoon baking soda; 1/2 teaspoon kosher salt; 3/4 cup ( 150 g ) granulated sugar; 6 tablespoons ( 84 g ) unsalted butter , melted; 3 tablespoons neutral oil , such as canola or vegetable; 1 large egg , at room temperature; 1 1/4 teaspoons vanilla extract; 3/4 cup well- mashed overripe banana (about 2 medium bananas); 3/4 cup low-fat buttermilk , at room temperature; 185 g mini semi-sweet chocolate chips, divided