Wash and slice sweet potatoes into 1/2-inch thick rounds. Pat them dry with paper towels.
Toss sweet potato rounds with olive oil, salt, and pepper in a large bowl until evenly coated.
Preheat air fryer to 380°F. Arrange sweet potato rounds in a single layer in the basket (work in batches if necessary).
Air fry for 18-20 minutes, flipping halfway through, until tender and lightly golden around the edges.
While sweet potatoes cook, mix together goat cheese, chopped cranberries, and chopped pecans in a small bowl.
Remove sweet potato rounds from air fryer and arrange on a serving platter.
Top each round with a small dollop of the goat cheese mixture.
Drizzle with honey and garnish with fresh thyme leaves. Serve warm or at room temperature.