Preheat the oven to 425F. Line a baking sheet with parchment paper.
Cut the tops and bottoms off of the bell peppers, then slice the sides into large slabs (see photo). Place on the baking sheet and toss with 1 tablespoon olive oil and ½ teaspoon salt. Bake for 8-10 minutes, or until slightly softened (we want them to hold up and have a lil crunch).
In a large skillet over medium heat, warm the remaining 1 tablespoon olive oil. Add the meat and ½ teaspoon salt and cook, breaking up into small chunks, until cooked through, about 5 minutes. If using beef, spoon off any excess fat at the end.
Add the tomato paste and spices and cook for 30 seconds, stirring constantly. Stir in the beans and remaining ¾ teaspoon of salt.
Divide the chicken mixture on top of the bell peppers. Top with cheese and place back into the oven for about 5 minutes, or until the cheese has melted.
Top with pickled jalapenos, guacamole, Greek yogurt or sour cream, and cilantro.