Heat the olive oil in a medium heavy-bottomed pot over medium-high heat.
Add the diced chicken breast and cook until browned on all sides, approximately 5 minutes.
Stir in the diced red onion, bell pepper, and minced garlic, sautéing for another 3-4 minutes until the vegetables are softened and fragrant.
Add the minced chipotle peppers, chili powder, cumin, sea salt, and black pepper, stirring constantly for 1 minute to toast the spices.
Pour in the tomato puree, rinsed black beans, and water, stirring well to combine all ingredients.
Bring the chili to a gentle boil, then reduce the heat to low and cover the pot.
Simmer for 15-20 minutes, allowing the sauce to thicken and the smoky flavors to fully develop.
Remove from heat and serve warm, garnished with fresh herbs if desired.