Begin by heating a drizzle of olive oil in a large, non-stick skillet over medium heat.

Add diced bell peppers and onions to the hot skillet, stirring regularly for about 5-7 minutes.

Stir in the shredded chicken, seasoning it with salt and pepper to taste.

Reduce the heat slightly and place a flour tortilla into the skillet.

Spoon a generous portion of the chicken mixture onto one half of the tortilla and sprinkle cheese on top.

Cook the folded quesadilla for about 3-4 minutes on one side, then flip and cook for another 3-4 minutes.

Once both sides are golden brown, remove the quesadilla from the skillet and let it rest.

Slice it into wedges and serve warm with a side of salsa or avocado.