Cook the bacon in a medium to large skillet until crisp. Remove from skillet, drain, crumble and set aside.

Add onion and garlic to bacon fat in skillet and cook for medium-low heat until softened and starting to brown.

Whisk eggs with milk or water and black pepper. Add to skillet and gently scramble with the onions.

When the eggs are almost set, add spinach and fold in. Cover and let cook about a minute for spinach to wilt. Add in the remaining ingredients along with reserved bacon pieces and gently mix all together just until warmed through.

Transfer to individual plates or a platter, sprinkle with a bit more feta, if desired, and serve passing salt as needed.