Preheat your oven to 425°F and line a large baking sheet with parchment paper.
Slice the potato into thin fries and dice the chicken breast into small, uniform bite-sized pieces.
In a bowl, toss the potato and chicken with avocado oil, half of the sea salt, and half of the black pepper.
Spread the mixture in a single layer on the baking sheet and roast for 20-25 minutes until the potatoes are golden and crispy.
While the fries roast, cook the bacon in a skillet over medium heat until crisp, then drain and crumble into small pieces.
In a small bowl, whisk together the Greek yogurt, lemon juice, garlic powder, onion powder, dried dill, and the remaining salt and pepper to create the ranch.
Remove the tray from the oven, sprinkle the shredded cheddar and bacon crumbles over the hot fries and chicken, and return to the oven for 2 minutes to melt the cheese.
Drizzle the herb ranch over the top and garnish with fresh chives before serving immediately.