Bring large pot of water to boil. Salt the water and cook pasta until al dente. Drain and set aside.
Place hot pot back on heat and cook bacon until browned and crispy {or cook how you like it}. Remove bacon from pot and drain onto paper towels.
In the bacon grease, sauté onions and garlic until softened, 5 minutes. Stir in pumpkin, spices and alfredo sauce. Pour milk into dirty alfredo sauce jar, replace lid, shake and pour into pot. Stir until combined.
Sprinkle in cheeses and stir slowly to melt.
Stir in cooked pasta and half the cooked bacon.
Spoon into dishes and top with remaining bacon and crumble chips over top and serve immediately.