Cook spaghetti according to package directions, drain, add 2 tablespoon sesame seed oil and dashes of salt and pepper. Set aside
Preheat oil in a non-stick wok or large fry pan over medium high heat. Add chicken, carrots and jalapeno pepper, stirring until color brightens, about 5 minutes. Add the spinach, black bean garlic sauce, soy sauce, and flour mixture. Stir over high heat for 2 minutes, then lower heat, cover and let simmer for 2 more minutes.
Combine chicken and spaghetti in large serving bowl.