Preheat your oven to a moderate setting.

In a mixing bowl, combine the chicken thighs with paprika, onion powder, garlic powder, black pepper, and salt. Toss until evenly coated.

Heat oil in a skillet over medium heat. Add the seasoned chicken thighs and sear until golden-brown.

Remove chicken and place it in a baking dish.

In the same skillet, melt butter over low heat; add minced garlic and cook until fragrant.

Sprinkle flour over the butter mixture and whisk until slightly pasty.

Gradually pour in the milk while whisking until smooth.

Stir in salt, garlic powder, onion powder, and the cheeses until fully combined.

Layer thinly sliced potatoes over the chicken in the baking dish.

Pour the creamy cheese sauce over the potatoes and chicken, ensuring everything is covered.

Cover the dish with foil and bake in the preheated oven.

After initial baking time, remove the foil and continue baking until top is golden and bubbly.