Heat a large skillet over medium heat and add the olive oil.
Saute the bell and jalapeno peppers and the chopped onion in the oil until the onion is translucent.
Add the potatoes to the skillet and add salt and pepper to taste. Stir to combine and then reduce the heat to medium-low and cover the skillet with a lid. Continue to cook covered, stirring often, for 15-20 minutes, or until the potatoes are easily pierced with a knife.
Remove the lid and add the taco meat and minced garlic. Saute until the meat has been warmed through. Taste for seasoning and adjust as needed.