I start by cutting my cooked chicken into rough one-inch cubes and chopping the celery into small pieces. Keeping the pieces uniform helps the food processor chop everything evenly. If my chicken is still warm from cooking, I let it cool fully first so the salad doesn't turn watery.
Into the food processor, I add the chicken, celery, mayonnaise, and pickle relish. I pulse everything on low for about 5 seconds at a time, checking the texture between pulses. This step builds the creamy base without turning the chicken into mush.
Next, I drop in the chopped hard-boiled eggs along with salt, pepper, and a small pinch of garlic powder if I'm using it. I pulse again in short bursts, just until everything is evenly distributed but still has some texture.
At this point, I stop and taste. The texture should be chunky, not a smooth paste that's what makes it feel like real chicken salad instead of a spread. If it looks too wet, I just let it sit for a minute since the chicken will absorb some of the mayo.
I always transfer the finished salad to an airtight container and chill it for at least 30 minutes. This step matters more than people think the flavors blend and deepen so much better once it's had time in the fridge.
To serve, I toast my whole wheat bread lightly, layer on a leaf of lettuce, pile on a generous scoop of chicken salad, and top it with the second bread slice. Cut it in half and it's ready to go