Preheat your oven or grill to 400°F (200°C).
In a small bowl, whisk together the sugar-free ketchup, apple cider vinegar, monk fruit sweetener, and soy sauce to create the sweet and sour glaze.
Coat the chicken drumsticks with half of the glaze. Roast or grill for 35-40 minutes. Brush with the remaining glaze during the last 10 minutes of cooking until sticky and cooked through.
Toss the trimmed asparagus with 1 tbsp of olive oil, salt, and pepper. Roast alongside the chicken for the final 12-15 minutes.
Boil the cubed potatoes in a pot of salted water until tender, about 15 minutes. Drain and mash with the milk and butter until smooth.
In a separate bowl, toss the diced cucumber and tomatoes with the remaining 1 tbsp of olive oil and a pinch of salt to make the salad.
Serve the glazed chicken garnished with red chili slices and chopped chives, accompanied by the mashed potatoes, roasted asparagus, and cucumber tomato salad.