With your fingers and hands flatten out each roll to about 1/4 inch thickness (they puff up when fried). Fry one at a time in hot oil, turning the bread over until it is lightly golden brown on each side. Remove from oil and let drain on a paper towel lined plate.
In a small bowl combine 1/2 cup of sour cream with the 1 tsp of chipotle chile peppers in adobo sauce. Blend until combined.
Build your Navajo Tacos by smearing about 1/4 cup of refried beans on the fry bread, followed by a little bit of the spicy sour cream sauce, diced avocado, lettuce, shredded cheese, tomato, sour cream, and a little bit of green onions on top.
Leave out the spicy sour cream sauce if you don't like it spicy.