Preheat oven to 375°F (190°C). Line a baking sheet with parchment paper.
Place cheese slices on the sheet, spaced apart. Bake for 5–7 minutes until bubbly and edges start to brown.
While hot, quickly add a spoonful of chicken, bacon, ranch, and green onions to one side of each slice.
Carefully roll into taquito shape. Let cool slightly to firm up.
Serve warm and crispy!
