Start pasta water to boil. Add pasta when it boils. Cook according to 'box' directions to al dente. I don't add salt to the water, I stir it occasionally to keep the pasta moving.
Add oil or butter to your pan and saute the chicken. When the chicken is cooked through add the vegetables.
Add mustard, preferred seasonings (salt, pepper, garlic powder and onion powder), teriyaki sauce to pan. Let it reduce by less than 1/4.
Drain Pasta and add chicken and veggies directly to pasta. You *can* stir in a tablespoon of olive oil or butter to pasta prior to stirring in chicken. This helps the sauce stick to the noodles better.