Preheat the oven to 350 degrees. Coat a baking sheet with olive oil cooking spray.
Place the chicken, diced onion, diced bell pepper, cilantro, and minced garlic on top of a large cutting board. Season with sea salt, freshly cracked pepper, and oregano, to taste. Chop all the ingredients until very fine and well mixed.
Once the tortilla is cooked, place a few spoonfuls of chopped chicken mixture in the center of the tortilla; top with cotija cheese and roll, folding in the sides.
Once they are all rolled, spray the top of each flauta with olive oil cooking spray.
Bake for 10 minutes, then flip and bake for an additional 10 minutes, or until golden brown and crispy.
While the flautas are baking, cook the jalapeno jelly in a saucepan over medium heat until thin and warm.
Serve the flauta with hot jalapeno jelly, salsa, guacamole, and sour cream for dipping, if desired. Enjoy.