Twisted Mac and Cheese

Semi-inspired by the Hard Rock Café's dish of the same name.

Ingredients (To serve 3). 30 mins-ish, including vegetable and chicken prep. 1 chicken breast (~250g), ~250ml milk, ~25g unsalted butter, ~2 tbsp. plain flour, 300g pasta, Ample cheese, grated (mainly base cheese like Cheddar, with some flavour cheeses like Parmigiano-Reggiano and Pecorino), 1 bell pepper (of your choosing), Sea salt, black pepper, Olive oil, Paprika, Chilli/red pepper flakes, Cayenne pepper. Instructions Chicken etc. Salt chicken breast 24 hours before, refrigerate and cover.