Add about 1 tbsp neutral oil to a sauce pan. Add the onions and sauté until soft, but not brown. Add the tomatoes, chiles, chicken stock, oregano, and cumin. Bring to a simmer and reduce until slightly thick, 7-10 minutes. Taste and season with salt.
Warm up the refried beans, if using.
Meanwhile, heat 1-2 tbsp of neutral oil in a heavy skillet. When the oil is hot, carefully fry the tortillas until lightly crisp and golden, flipping once, 15-20 seconds per side. Let drain on paper towels or a wire rack.
Once the tortillas are finished, fry the eggs sunny side up to your preferred doneness in the same pan.
To assemble: Lay the fried tortillas on a plate, slightly overlapping. Top with salsa and an egg on each tortilla. Top the eggs with a touch more salsa. Serve with refried beans on the side and finish with cilantro and queso fresco and enjoy!