Place a large cast iron or oven proof skillet over medium heat. Add the ground pork sausage. Saute until sausage is cooked through.
Add sliced mushrooms (reserving a few for the top), minced garlic, salt, onion powder, black pepper and crushed red pepper flakes to the meat mixture and saute for 1 to 2 minutes.
Crack the eggs into a large mixing bowl and whisk. Then mix the shredded cheddar cheese into the eggs.
Pour the egg mixture over the pork mixture in the skillet.
Once the eggs start to get firm and set on the bottom and sides (30 seconds) top with heirloom tomatoes and the remaining mushrooms.