Preheat your oven to 375°F (190°C).
Heat the avocado oil in a small skillet over medium heat and sauté the diced celery until it becomes slightly softened.
In a mixing bowl, combine the cooked shredded chicken breast, Greek yogurt, buffalo sauce, garlic powder, onion powder, sea salt, black pepper, and the sautéed celery.
Transfer the mixture to a small oven-safe baking dish and spread it into an even layer.
Sprinkle the crumbled feta cheese evenly over the top of the chicken mixture.
Bake for 15-20 minutes until the edges are bubbling and the cheese is lightly golden.
While the dip bakes, slice the carrots and cucumber into long sticks for dipping.
Remove the dish from the oven and serve immediately with the fresh vegetable dippers.