In a mixing bowl, whisk the flour, baking powder, and salt. Stir in the milk and add enough flour to make a soft dough that doesn't stick to your hands.
Knead the dough on a lightly floured counter just until smooth. Cover and let rest for about 5-10 minutes.
Divide dough into 6 pieces. Roll each piece into a 6-7" circle on the floured counter.
In a medium sized skillet, heat about half of the oil over medium heat till it's about 350°. Cook each piece of dough for 1-2 minutes per side until lightly browned. Add more oil to the pan as needed. (Alternately, you can use 2-3 cups of oil and deep fry the navajo bread.)
Place fried bread on paper towels to drain. You can then place them on a plate in a warm oven if desired.
Top each piece of fry bread with chili or taco meat, lettuce, cheese, tomatoes, sour cream, and any other toppings you want.
Notes
Nutritional information is just an estimate. It varies greatly depending on the amount of oil you use and the toppings you add.