1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper or a silicone mat.
2. In a large bowl, combine the Greek yogurt, almond flour, tapioca flour, baking powder, garlic powder, and salt. Mix thoroughly until the dough is well combined and slightly sticky.
3. If dough is too dry, add a bit more Greek yogurt; if too sticky, add more flour gradually.
4. Oil your hands lightly. Divide the dough into four equal portions.
5. Roll each portion into a ball, poke a hole in the center and gently stretch to form a bagel shape.
6. Place the shaped bagels about 2 inches apart on the prepared baking sheet.
7. Brush the tops and sides lightly with egg white or oil. Sprinkle everything bagel seasoning evenly on top.
8. Bake for approximately 20-25 minutes, or until golden brown and firm.
9. Remove from the oven and cool on the baking sheet, then transfer to a wire rack to cool completely.
10. Slice and serve. Optionally, toast before serving for extra crispiness.