01 -
In a small bowl, mix together dry mustard, dried thyme, dried oregano, salt, and freshly ground black pepper.
02 -
Cut chicken breasts into thin strips or 2.5 cm cubes. Sprinkle evenly with the prepared seasoning mixture.
03 -
Heat olive oil in a large skillet over medium-high heat. Add seasoned chicken and cook until golden and cooked through, about 4-6 minutes. Transfer chicken to a plate and set aside.
04 -
Bring a large pot of salted water to a boil. Add pasta and cook until al dente according to package instructions, then drain and set aside.
05 -
In the same skillet used for chicken, melt butter over medium heat. Add flour and stir for 1 minute to form a roux.
06 -
Add dry white wine, minced garlic, diced onion, and Dijon mustard. Sauté for 3-5 minutes until onion is soft and mixture is aromatic.
07 -
Gradually pour in milk, stirring continuously, and simmer on low heat for 4-6 minutes until the sauce thickens.
08 -
Add grated white cheddar cheese to the sauce, stirring until fully melted and smooth.
09 -
Return cooked chicken and pasta to the skillet. Toss until evenly coated in the cheese sauce. Serve immediately, garnished with fresh thyme and crushed red pepper flakes as desired.