01 -  Set oven to 375°F (190°C) and allow to fully preheat. 
 02 -  In a large oven-safe skillet over medium heat, cook bacon until crisp. Drain on paper towels and roughly chop. Reserve 1 tablespoon bacon fat in pan; discard excess. 
 03 -  Add olive oil to reserved bacon fat. Sauté chopped onion over medium heat for 3 minutes, until soft and translucent. Stir in spinach and cook until wilted, about 2 minutes. 
 04 -  In a large bowl, whisk together eggs, milk, ricotta cheese, Parmesan, salt, and pepper until smooth and fully combined. Fold in fresh chives, parsley, basil, chopped bacon, onion, and spinach. 
 05 -  Pour mixture back into skillet, distributing evenly. Cook over medium-low heat for 4–5 minutes until edges begin to firm. 
 06 -  Transfer skillet to preheated oven and bake for 15–18 minutes, or until center is set and top is lightly golden. 
 07 -  Remove from oven and allow to cool for 5 minutes. Slice into portions and serve warm or at room temperature.