In a medium skillet, add the crumbled breakfast sausage and cook over medium heat until browned and fully cooked, about 6-8 minutes. Once cooked, drain any excess grease and transfer the sausage to the slow cooker.
In a large mixing bowl, whisk together the eggs until well beaten. To the eggs, add the diced bell peppers, onions, drained green chiles, garlic powder, cumin, and season generously with salt and pepper. Stir until all ingredients are combined.
Carefully pour the egg and vegetable mixture over the crumbled sausage in the slow cooker, spreading it evenly.
Cover the slow cooker with its lid, setting it to cook on low for 4 hours or high for 2 hours, until the eggs have set and are cooked through. Stir the mixture occasionally to promote even cooking.
When the taco filling is fully cooked, sprinkle the shredded cheddar cheese on top. Cover the slow cooker again and let it sit on the warm setting for about 10 minutes, allowing the cheese to melt beautifully.
While the cheese melts, warm the small flour tortillas in a dry skillet over medium heat for about 30 seconds on each side, or microwave them for 20 seconds until soft and pliable.
To assemble the tacos, take a warmed tortilla and spoon a generous amount of the breakfast mixture onto the center. Garnish with fresh cilantro and pop a couple of avocado slices on top for added creaminess and flavor.
Notes
Serve the tacos on a vibrant platter, and offer extra cilantro and avocado slices on the side for guests to customize their tacos. A drizzle of hot sauce could also add a delightful kick!