Cook the pasta according to the package directions. Drain and keep warm.

Meanwhile, heat the olive oil in a large saute pan over medium heat. Add the garlic and saute for one minute.

Add the milk, cream cheese, sour cream, salt, and pepper. Stir until the cream cheese has melted, about 3 minutes.

Stir in the jalapenos and green chilies and mix until well combined. Remove from heat.

Add the drained pasta and the shredded cheeses to the skillet and mix until well combined and the cheeses have melted.

Serve immediately.