Place softened cream cheese, spices and hot sauce in the bowl of a stand mixer. Combine until cream cheese is soft and combined with all the seasonings.
Add shredded Pepper Jack cheese, diced jalapeño, and chives.
Mix on low speed until combined.
Place a 2 foot long piece of plastic wrap onto a smooth work surface.
Place cheddar cheese onto the plastic wrap. Spread cheese out into an even layer.
Scoop out cream cheese mixture from mixing bowl and place the cheese mixture onto the plastic wrap with the cheddar cheese.
Pull up the ends of the plastic wrap and gently press the cream cheese into a ball shape, pressing the cheddar cheese onto the outside of the ball to completely cover it with the shredded cheddar cheese.
Once the cream cheese is shaped into a large ball and covered with the grated cheddar cheese, wrap the entire ball with the plastic wrap.
Cut about a 2 foot length of twine and wrap it around the cheeseball 3 times, spacing it apart equally. Tighten the twine to create indentations in the cheeseball to resemble a pumpkin.
Remove the twine and unwrap the cheese ball to expose the top.
Press the stem from a bell pepper into the top and press it into the cheeseball to secure it in place.
Rewrap the cheeseball with the plastic wrap and refrigerate for at least 2 hours to allow all the flavors to combine.