
Start by placing the chicken breast in a pot with the orange juice and cover the pot.
Place it in a preheated oven at 180° C (350° F) and bake for 30 minutes.
In a large pot, add the diced potatoes, enough water to cover everything and let them cook for 15 minutes.
Then transfer everything to a large bowl, add the unsalted butter, the salt and mash everything very well until it turns into a smooth puree.
Add the grated Parmesan cheese, mix once more to incorporate and set aside.
Once the chicken is done baking, remove it from the pot.
Season with the salt, the black pepper and the chimichurri.
Flip it over and repeat the same seasoning on the other side.
In a large skillet over medium to low heat, add the butter, the peeled garlic cloves, the sprig of rosemary and stir everything very well until the butter has completely melted.
Add the seasoned chicken and fry it until both sides are golden brown.
Finally, cut the chicken into strips.
Serve.