First, we prepare the chicken for the quesadilla.
If you are making it with ham, skip the next steps.
In a small bowl, combine 3 cloves of garlic, crushed, the juice from half an orange, 1 teaspoon of oregano, 1 tablespoon of apple cider vinegar, 0.5 teaspoon of cinnamon, 1 teaspoon of paprika or chili, 1 tablespoon of salt and a little ground black pepper.