Chicken Pesto Pasta

I found this recipe at the Daily Kitchen.  It sounded good but I made it completely my own...

Chicken Pesto Pasta

1 cup fresh basil
1 cup fresh arugula
1 1/2 cup fresh spinach
1/3 cup walnuts
1 tsp lemon juice
1/4 cup olive oil
2 chicken breasts, cooked
1/2 package whole wheat spaghetti noodles

Cook spaghetti according to package.

Combine the basil, arugula, and spinach in a food processor and process.  Add walnuts and lemon juice.  Pulse to combine.  Slowly add olive oil until fully combined.

Drain spaghetti saving 1 cup of the cooking water.   Add pesto to spaghetti until you have the desired amount.  Add cooking water if necessary.  Plate the pesto pasta and top with chicken.