In a large bowl mix together the sourdough starter, water, oil, and salt
Add the flour and mix to combine, then knead for 1-2 minutes until your dough looks homogenous
Cover the dough with a towel and let rest for 30 minutes
Preheat a large skillet on high
Divide the dough into 8 pieces, rolling each section into a little ball
Roll out each section of dough into a thin, round circle that is roughly ¼ inch thick
Sprinkle a bit of the roasted garlic powder over the tortilla
Individually cook each tortilla for one minute on both sides. Flip once little bubbles start to form so it has those nice brown spots
Let them cool before storing to prevent sticking