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.