In a bowl, mash the avocado with a fork until smooth. Mix in the cumin, cilantro and lime. Season with salt and pepper to taste.
Preheat a non-stick pan over medium heat and brown the chicken sausage slices on each side. Toast the bread and spread the avocado mixture on top. Sprinkle with red pepper flakes if desired.
Preheat a non-stick pan over low-medium heat with oil. Add the eggs and cheese into the pan and move them around using a spatula until they become firm and no longer runny but still moist.
Serve the eggs with avocado toast, sliced chicken sausage, and grapes.