In a large skillet cook bacon until crisp over medium-high heat. Set bacon aside and reserve grease in skillet.
Cut chicken breasts in half lengthwise to create four thinner breasts. Season with salt and pepper.
Heat bacon grease in the skillet on medium-high heat. Add the chicken and brown 2 to 3 minutes per side, or until just cooked through.
Sprinkle the ranch seasoning over the chicken, turning to coat. Top with mozzarella cheese. Cover skillet with a lid for 2-3 minutes and allow cheese to melt. Top with crumbled bacon and green onion.
Notes
Refrigerate leftovers in an airtight container for 3 days and in the freezer for 1 month.