Combine 1 tablespoon lemon juice, 1 teaspoon olive oil, 1 minced garlic clove in a bowl to make a marinade for the chicken breast. Add the chicken breast, turning to coat. Put plastic wrap over the bowl and set it in the fridge to let the chicken marinate for about 30 minutes.
Meanwhile, boil a pot of water and heat the noodles according to package instructions.
While the noodles are cooking, put all the pesto ingredients in a food processor or blender and mix it until it forms a paste.
Heat a skillet over medium heat, and spritz the skillet lightly with nonstick spray.
Cook the chicken breast in the hot skillet, about 4 minutes per side. You'll know the chicken is done cooking when a thermometer registers an internal temperature of 165 °F. (putting a lid on the skillet with help it cook a little faster)
Transfer the cooked chicken to a plate or cutting board and let it rest for about 3 to 5 minutes before cutting it into bite-size pieces.
Stir together the hot pasta and the pesto paste. Arrange the chicken pieces on top.