Preheat the oven to 425°F (220°C). Line a muffin pan with paper liners or lightly grease the pan.
In a large bowl, whisk together the whole wheat flour, all-purpose flour, baking powder, baking soda, cinnamon, and salt.
In another bowl, mix the mashed bananas, eggs, honey, brown sugar, olive oil, Greek yogurt, and vanilla extract until smooth.
Fold the dry ingredients into the wet ingredients gently until just combined. Do not overmix the batter.
Add the chocolate chips and fold them into the batter evenly.
Fill each muffin liner almost to the top for tall bakery-style muffins.
Bake for 5 minutes at 425°F (220°C), then reduce the oven temperature to 350°F (175°C) and continue baking for 13 to 15 minutes.
Insert a toothpick into the center of a muffin. If it comes out mostly clean, the muffins are done baking.
Allow the muffins to cool in the pan for 5 minutes before transferring them to a cooling rack.