Line a baking sheet with parchment paper or aluminum foil
Mix the chicken and hot sauce in a small bowl and set aside.
Lightly spray one side of each tortilla with olive oil spray, or lightly brush with oil.
Flip the tortillas over. Using 1 cup of the Monteray jack cheese, sprinkle on one half of each tortilla.
Top each with the buffalo chicken, red peppers, sliced onions, half of the blue cheese (reserving half for the tops) and remaining Monterey jack cheese. Drizzle each with a bit more hot sauce, depending how spicy you like it.
Fold the top half of each tortilla over the filled half.
Sprinkle remaining blue cheese on the top of each quesadilla.
Place in the oven and bake for approximately 20 minutes until crisp and golden.
Remove from the oven, slice and serve with blue cheese dip or additional buffalo sauce.