Season chicken breasts with salt, pepper, and garlic powder.
Heat olive oil in a large skillet over medium heat.
Sear chicken for 5–6 minutes per side until golden and cooked through. Remove and set aside.
In the same skillet, melt butter. Whisk in flour and cook for 1 minute.
Slowly whisk in milk, stirring constantly until the mixture thickens.
Add shredded cheddar, Dijon mustard, honey, paprika, and salt. Stir until smooth and creamy.
Return chicken to the skillet and spoon sauce over the top. Simmer for 3–4 minutes.
Serve hot with extra sauce.