Preheat oven to 375 degrees F (190 degrees C). Line 9 muffin cups with paper muffin liners.

Whisk sifted flour, white sugar, brown sugar, pumpkin pie spice, baking powder, and salt in a large bowl.

Stir pumpkin puree, vegetable oil, milk, egg, vanilla extract, and lemon extract in a separate bowl.

Combine the wet mixture with the dry mixture; stir until batter is just combined.

Coat white chocolate chips with 1 tablespoon of flour. Fold them into the batter and spoon batter into muffin cups.