Preheat the oven to 400 degrees. Spray a 9-inch square baking dish with cooking spray. (Can also be baked in a 9 by 12 baking dish, it will just take about 5 minutes less time to cook.)
Place the cream cheese in a large microwave-safe bowl. Microwave the cream cheese for 2 minutes on high power. Stir in the Romano cheese, sour cream, heavy cream, and mayonnaise until smooth. Add the garlic, artichokes, chicken, spinach, and peppers. Stir until thoroughly mixed. Taste and add salt and pepper if desired. Put the mixture into the prepared baking dish and smooth the top. Top with the provolone cheese slices and bake for 20-25 minutes or until the cheese has melted and is golden brown.