Start by melting the chicken cube in your 125 mL of water and reserve
In your pan, add the butter and melt it at medium heat
Add the sliced chicken pieces and sprinkle them with salt and pepper
Cook the pieces while paying attention to lower the heat after a few minutes so they do not dry up
Once cooked, reserve them in a separate plate and cover it with aluminum foil
In the same pan, add the shallot and cook it for a few minutes on medium heat
Add the mushrooms and stir from time to time, until they start softening
Add the garlic and the paprika, stir well, and let it cook for a few minutes
Now add the melted chicken cube and keep cooking until it starts boiling
Add the parmesan cheese and keep stirring until it starts melting
Now you can add the cream, your cooked chicken, and the herbs
At low heat, keep stirring occasionally until the cream starts boiling and thickening