Preheat oven to 375 degrees.

Dice raw bacon into bite-sized pieces. Heat a large saute pan over medium-high heat. Add diced bacon and cook until crispy, about 5-6 minutes. Using a slotted spoon, transfer cooked bacon to a paper towel lined plate and set aside. Pour off some of the bacon grease, leaving a small amount in the pan. Return saute pan to burner and heat pan to medium-high heat. Season chicken with ¼ teaspoon salt and black pepper. Add seasoned chicken to saute pan and cook for 4-5 minutes, or until cooked through.

In a large bowl, combine the cooked chicken, tomatoes, and half of the green onions, bacon pieces, and both cheeses.

In a small bowl stir together mayonnaise, sour cream, ranch dressing, ¼ teaspoon salt and black pepper. Pour ranch mixture over chicken mixture and stir to combine.

Place both halves of the French bread on a large baking sheet lined with foil. Spread chicken ranch mixture evenly on top of both pieces of French bread. Bake for 15 minutes in preheated 375 degree oven. Remove from oven and top with remaining bacon and cheese. Return to oven an bake for an additional 3-4 minutes, or until cheese is melted and edges are lightly browned.

For serving, top with remaining green onions and chopped parsley. Serve immediately with additional ranch dressing for dipping.