Combine frozen stir-fry vegetables, chicken broth, soy sauce, ground ginger, sugar, garlic powder, and red pepper flakes in a large saucepan.

Bring the mixture to a boil over high heat.

Add broken angel hair pasta to the boiling mixture.

Reduce heat to low, cover the saucepan, and simmer for 8-10 minutes, or until pasta is tender.

In a small bowl, combine cornstarch and water, stirring until smooth.

Pour the cornstarch mixture into the saucepan with the pasta and vegetables.

Add julienned cooked turkey breast to the saucepan.

Bring the mixture back to a boil, stirring constantly.

Cook and stir for 3 minutes, or until the sauce has thickened.

Serve immediately.