If using an oven, preheat to 450 degrees F. If your oven has a convection or convection roast setting, turn that on for the crispiest results!
In a mixing bowl, combine the ground chicken, celery, scallions, cream cheese, buffalo sauce, garlic powder, freshly cracked black pepper and 3/4 cup of gluten-free bread crumbs. With clean hands, squeeze and mix the mixture together until fully. combined. (Sorry for the raw meat action lol, this is just the best way to make sure the ingredients are fully dispersed throughout.)
Place the mixture into the fridge to firm up while your prepare the bread crumbs.
In a separate mixing bowl, combine 1 1/2 cups gluten-free bread crumbs and 2 tsp of paprika. Taste the bread crumbs to see if they are naturally salty. If they taste dull and unseasoned (the only comparison I can think of here is like holy Communion lol I am sorry God,) add 1/4 tsp of fine kosher salt to the bread crumb mixture. IMPORTANT! Please note that your poppers will already be salty due to the buffalo sauce in the chicken mixture and when it's drizzled on top or coating the poppers, so if you are sensitive to sodium or don't like too much salt, do not season your bread crumb mixture with salt! If you don't want to coat your poppers in buffalo sauce, then I think adding the 1/4 tsp of salt here is fine. :) trust your instincts! You can always toss them in salt after they cook, too! Remove the ground chicken mixture from the fridge. Spread the mixture out onto parchment paper and form a 1-2 inch thick rectangular slab. Use a knife to cut the slab into even chicken nugget sized pieces. Take each newly cut piece and roll it into a chicken nugget shape (whatever shape you want.)
If baking in the oven, spritz or wipe down a sheet pan with oil to make it nonstick. Then, place the poppers onto the newly prepared sheet pan in even rows. Spritz the poppers with oil or drizzle oil on top and bake for 20 minutes. Then, flip them over and bake for another 10-20 until golden brown and crisp on the outside. Cook time can depend on the size of your poppers, so if they feel soft and not crunchy, continue to bake until they harden up.
If air frying, place the poppers evenly into the air fryer basket and air fry for 20 minutes at 400 degrees, until golden brown and crispy. The internal temperature should be at lest 165 degrees.
Remove the poppers from the heat. You can toss them in buffalo sauce if you want them fully coated like wings, or you can drizzle buffalo sauce on top / serve it on the side. Serve with blue cheese dressing if you feel so inclined (it tastes so good!) Enjoy immediately!