Heat the olive oil in a medium pot over medium-high heat.
Season the cubed chicken breast with sea salt and black pepper, then sear in the pot until golden brown on all sides.
Remove the chicken from the pot and set aside, then add the diced red onion and sauté until translucent.
Stir in the minced garlic, aji amarillo paste, and tomato paste, cooking for 1-2 minutes until highly fragrant.
Return the chicken to the pot along with the cubed potatoes, sliced carrots, dried oregano, and chicken broth.
Bring the liquid to a gentle boil, then reduce heat to low, cover, and simmer for 20 minutes until the potatoes are tender.
Stir in the frozen peas and cook for an additional 2 minutes until heated through.
Garnish with fresh chopped cilantro before serving.