Heat a large skillet over medium heat until hot and then add olive oil.
Add the chicken to the pan and season with salt, pepper, and garlic powder. Cook on each side until almost cooked through.
Remove chicken from the pan and set aside.
While the chicken is cooking, prepare pasta according to package directions. Drain and set aside.
To the same skillet, add the butter and melt over medium heat. Add garlic and saute for 45 seconds. Add flour and continuously whisk for 1 minute.