Preheat your oven to 180°C (350°F), and line your tray with muffin papers.
Strain the flour, salt, and baking powder in one bowl, then set aside.
Mix sugar with eggs in another bowl until you get a pale-colored batter.
Add the yogurt and mix to combine.
Pour the olive oil, and continue mixing.
Add the sifted dry ingredients from earlier and the orange zest.
Mix gently --- just enough to combine everything.
Spoon the orange yogurt muffin batter into the lined muffin tins --- leaving a bit of space on the top of each tin.
Place them in the oven for 25 to 30 minutes or until the top turns golden.
Take your orange yogurt muffins out of the oven and set aside to cool.
Sprinkle with powdered sugar, if desired --- and serve!