Preheat the oven to 450 F.
Combine the eggs, milk, flour, garlic powder, paprika and salt in a blender until completely smooth.
In a 10" iron skillet cook the Soy Chorizo as per the package instruction. I crumbled and cooked Trader Joe's Soy Chorizo on a medium heat for 5 minutes.
Transfer the Soy Chorizo in a clean plate, wiped the skillet with a paper towel and return back to heat.
Add butter and once it's melting add shallots. Cook with occasional stirring until the shallots are soft and fragrant. Turn off the heat
Pour the smooth batter into the skillet, sprinkle the Soy Chorizo and manchego cheese and immediately place the skillet in the preheated oven.
Bake for 20 to 25 minutes, until the pancake is puffed and sides are golden brown.
While the pancake is baking, toss the arugula in olive oil and lemon juice and set it aside.
Once the pancake is out of the oven, top it with prepared arugula and serve immediately.