Preheat oven to 450. Place parchment paper on sheet pan. Combine peppers and quartered potatoes in a bowl and toss with olive oil and salt and pepper. Spread on sheet pan and bake for 10 minutes. Flip and bake for another 10-15 minutes. Peppers should be starting to char but not burning.
While veggies are roasting season and cook steak to your liking.
Add all chimichurri ingredients to a blender and blend until mostly smooth. Transfer to a bowl.
When peppers and potatoes are done roasting transfer them to a bowl. Top them with chimichurri sauce. Break the burrata ball into pieces and place on top of the veggies. Slice the steak and top with chimichurri. Enjoy!