Cook the pasta according to package directions.
Heat the olive oil in a frying pan. Add the thin sliced chicken breast, sprinkling salt and pepper on each side.
Cook the chicken breast until heated through, about 5 minutes on each side.
Remove the cooked chicken to a plate.
Prepare the sauce.
In a heavy stock pot or Dutch oven, melt the butter over medium high heat.
Add the flour to the butter, whisking until it is incorporated.
Slowly add the milk to the butter and flour mixture, whisking constantly.
Cook the sauce until it bubbles and begins to thicken. Be sure to keep whisking so that it doesn't burn or stick.
When the sauce thickens, lower the heat and add the sriracha, cayenne, and paprika. Whisk all together completely.
Stir in the cheese. It is easier to use a wooden spoon than a whisk at this point. Stir until melted and combined.
Cut the chicken into bite sized pieces.
Add the chicken to the sauce.
Drain the cooked pasta and add the pasta to the sauce. Stir until combined.
Let the mixture heat through another two or three minutes.