Step 1: Preheat your waffle maker while you prepare the chaffle batter.

Step 2: In a bowl, whisk together the eggs, mozzarella cheese, and almond flour until well combined.

Step 3: Lightly grease the waffle maker, then pour the chaffle batter into it, spreading it evenly.

Step 4: Cook the chaffles for about 3-4 minutes or until they are golden brown and crispy.

Step 5: In another bowl, mix the tuna, mayonnaise, Dijon mustard, celery, red onion, garlic powder, onion powder, salt, and pepper.

Step 6: Spread the tuna mixture evenly over the cooked chaffles.

Step 7: Sprinkle shredded cheddar cheese over the tuna mixture.

Step 8: Place the chaffles under a broiler for 2-3 minutes or until the cheese is melted and bubbly.

Step 9: Remove from the oven and let them cool slightly before serving.

Step 10: Cut into desired portions and enjoy your savory tuna melt chaffles!