In a skillet over medium heat, cook the bacon until it's crispy. Place the cooked bacon on paper towels to drain excess grease, then crumble it into small pieces.
Preheat your oven to 400°F as per the instructions on the French fries package.
Spread the frozen French fries in a single layer on a baking sheet.
Place the baking sheet in the oven and bake the fries for 15-18 minutes, or until they are golden brown and crispy.
Temporarily remove the fries from the oven. Sprinkle the shredded cheddar cheese and crumbled bacon evenly over the fries. Top with jalapeño slices if using.
Return the baking sheet to the oven and bake for an additional 5 minutes, or until the cheese has melted.
Remove from the oven and sprinkle the sliced green onions. Serve immediately while hot.