Heat the extra virgin olive oil in a medium pot over medium heat.
Add the diced yellow onion and red bell pepper, sautéing until the vegetables are soft and translucent.
Place the chicken breast in the pot and sear for 3-4 minutes per side until lightly browned.
Stir in the pinto beans, tomato puree, chicken broth, chili powder, smoked paprika, cumin, sea salt, and black pepper.
Bring the mixture to a gentle boil, then reduce the heat to low, cover, and simmer for 15-20 minutes.
Remove the chicken breast from the pot and shred it using two forks before returning it to the chili.
Simmer for an additional 5 minutes to allow the flavors to meld together.
Ladle the chili into a bowl and top with a dollop of Greek yogurt and fresh cilantro before serving.