Line a muffin pan with paper cupcake liners or silicone muffin cups, then set aside.
In a large bowl, add the self rising flour, sugar, salt, and zest. Whisk the dry ingredients together to combine.
Slowly add in the wet ingredients of milk, oil, egg, lemon juice, and vanilla, stirring until the mixture forms a batter. Gently fold in the blueberries until evenly distributed throughout the batter.
Using a cookie scoop, evenly divide the batter filling the muffin liners, filling about 3/4 full, then place in the preheated oven, and bake for 18-20 minutes, until the tops are golden brown and spring back when lightly touched on top, or when a toothpick inserted comes out clean.
Remove from oven and allow to cool in pan for about five minutes, then transfer to a wire rack to finish cooling.
Once muffins are cooled, in a small mixing bowl, add the powdered sugar and 1 tablespoon of lemon juice. Add additional juice until the glaze reaches your desired thickness.
*Nutritional information is a calculated guesstimate. Please note that this can change with different brands and modifications you may make to the recipe. For the most accurate information, use a nutritional calculator with the exact brands and measurements you're using with each recipe.