In a skillet, heat olive oil over medium heat. Add the diced bell pepper and sliced mushrooms. Sauté for about 5 minutes until they start to soften.
Add the grated zucchini, chopped spinach, cumin, paprika, salt, and pepper. Cook for another 3-4 minutes until the spinach wilts and the zucchini is tender. Remove from heat and set aside.
Preheat another large skillet or griddle over medium heat.
Place one tortilla in the skillet and sprinkle half of the shredded cheese evenly over half of the tortilla.
Spoon a generous amount of the veggie mixture over the cheese and top with more cheese before folding the tortilla in half.
Cook for about 2-3 minutes on one side until golden and crispy, then carefully flip and cook for another 2-3 minutes on the other side until the cheese is melted and the tortilla is crispy.
Repeat with the remaining tortillas and filling.
Slice the quesadillas into wedges and serve hot with salsa and guacamole on the side.
Notes
Serve on a colorful plate with salsa and guacamole for a vibrant display.