Preheat the oven to 350°F. Spritz a 1 1/2 quart baking dish with cooking spray.
Using a hand mixer whip together the softened cream cheese, mayonnaise, sour cream, taco seasoning, garlic powder, and ground chipotle pepper until smooth.
By hand stir in 2 cups of shredded pepper-jack cheese, crumbled bacon, green chilies, and 2 Tbsp chopped chives.
Spread into the prepared baking dish. Sprinkle the remaining shredded cheese on top.
Bake for 30 minutes.
Garnish with chopped chives and serve immediately with your choice of vegetables, crackers or tortilla chips.