In a large mixing bowl, combine the shredded chicken with the BBQ sauce. Stir well until the chicken is evenly coated.
Heat a skillet over medium heat and add a drizzle of olive oil. Once hot, add the sliced red onion and bell pepper. Sauté for about 5-7 minutes until tender and lightly caramelized. Remove and set aside.
In the same skillet, place a tortilla flat. On one half, layer the BBQ chicken mixture, sautéed onion, and bell pepper. Sprinkle half of the mozzarella and cheddar cheese on top.
Fold the tortilla in half to cover the filling. Cook for about 3-4 minutes on one side until the cheese is melted and the tortilla is golden brown. Flip and cook the other side for an additional 3-4 minutes. Repeat until all tortillas and filling are used.
Once cooked, remove the quesadilla from the skillet and let it rest for a minute. Slice into wedges.
Serve garnished with fresh cilantro, accompanied by sour cream and sliced jalapeños.
Notes
Arrange the quesadilla slices on a vibrant plate, served with a dollop of sour cream in the center and jalapeños arranged around for a pop of color and flavor.