Preheat oven to 350 degrees F. Place liners in muffin tin.
In a bowl, add tea, oat flour, all-purpose flour, salt, baking powder, and baking soda. Mix well.
In a second bowl, whisk eggs and sugar together for one minute. Add zest, juice, yogurt, and vanilla and mix together well. Slowly pour in the oil, whisking constantly.
Add the dry ingredients to the wet and gently combine with a spatula.
Pour the batter into the tin and bake until toothpick comes out clean, 20-25 minutes.
While cupcakes are baking, make the lemon glaze. In a small bowl, whisk together powdered sugar, milk, and juice. It should be thick, but pourable. Set aside.
Allow cupcakes to cool. Once cool, pour or brush the glaze onto the cupcakes.