Preheat your oven to 360°F (180°C).

In a large mixing bowl, whisk together the egg, honey, Greek yogurt, vanilla extract, and olive oil until smooth and well blended.

Add the plain flour, vanilla-flavored protein powder, baking powder, and baking soda to the wet mixture. Stir gently until just combined, being careful not to overmix.

Gently fold in the fresh blueberries using a spatula or spoon, taking care not to crush them.

Spoon the batter into a lined muffin pan, dividing it evenly to make 12 regular-sized muffins.

Place the muffin pan in the center of the preheated oven and bake for about 15-20 minutes, or until a toothpick inserted into the center comes out clean.

Let the muffins cool in the pan for a few minutes before transferring them to a wire rack.