Puree the beetroot, chickpeas, oil and lemon juice in a blender, season the hummus.
Season the chicken breasts, fry in the hot butter for approx. 4 mins. on each side, cut into pieces. Lay out the tortillas, arrange half of the hummus, spinach, avocado, chicken and pine nuts on top, season. Roll up into wraps, wrap in baking parchment, refrigerate. Cut the wraps in half prior to serving.