In a medium skillet, brown the crumbled breakfast sausage over medium heat until fully cooked. Drain excess grease and transfer the sausage to the slow cooker.
In a large bowl, whisk together the eggs, then add the bell peppers, onions, green chiles, garlic powder, cumin, salt, and pepper. Mix well.
Pour the egg mixture over the sausage in the slow cooker.
Set the slow cooker on low for 4 hours or high for 2 hours, or until the eggs are set and cooked through. Stir occasionally to ensure even cooking.
Once cooked, sprinkle the shredded cheddar cheese on top of the mixture and let it melt for an additional 10 minutes on the warm setting.
In the meantime, warm the flour tortillas in a dry skillet or in the microwave.
To serve, spoon the breakfast mixture onto the warmed tortillas. Top with fresh cilantro and avocado slices.
Notes
Feel free to customize with your favorite toppings.