In a large pot (I used a 5 qt pot) add the dry pasta, evaporated milk, and water. Stir together and heat to boiling over high heat.
Once it reaches a boil, reduce heat to medium-high and cook for 8 minutes, stirring frequently.
While pasta is cooking cook the peas in the microwave according to package directions. Be sure and drain the peas when they're done cooking.
After the pasta is done cooking for 8 minutes, stir in the cooked chicken and jar of alfredo sauce. Stir together and let cook for an additional 4-5 minutes, stirring frequently.
Remove from heat and stir in the green peas and parmesan cheese, stirring until combined. Pasta will thicken as it sits off the heat.
