Preheat oven to 375°F (190°C).
In a large (10 or 12-inch) oven-safe skillet, combine the pepper jack cheese, Velveeta Queso Blanco, shredded chicken, drained Rotel, ranch seasoning, and most of the crumbled bacon (reserving ¼ cup for topping).
Pour in the heavy cream and gently stir until everything is evenly mixed.
Transfer the skillet to the oven and bake uncovered for 25–30 minutes, or until the cheese is melted and bubbling around the edges. Stir gently halfway through to help everything melt evenly.
Carefully remove from the oven. Top with the reserved bacon and sliced green onions.
Let sit for 5 minutes before serving.
Serve warm, straight from the skillet, with tortilla chips for dipping.