First, remove the chicken breasts from the rotisserie chicken by slicing down and underneath the breast bone. Make sure to also remove any skin stuck to the breasts. It’s great flavor, but the texture isn’t pleasant in a chicken salad. (See notes for an optional flavor boost.) Roughly chop the chicken breasts on a cutting board and add them to a food processor. If the pieces are too big, they will get caught in the blades and the processor won’t work. Pulse until you are happy with the size of the pieces. (Of note: The chopped chicken will break down a bit more as you mix the chicken into the other ingredients, so consider the ending texture as you work.) Put the processor bowl with the chopped chicken into the refrigerator to store until it’s time to mix everythign together.
Next, use your knife to slice down the celery stalks, and create 3-4 long pieces of celery per rib, depending on how wide they are. Once the thin pieces of stalk are cut, small dice the celery to your preferred size. I like thing slivers for a tiny bit of crunch in each bite, but no need to chew for an extended period of time. When cut, set the chopped celery aside.
In a small bowl, measure and mix the mayonnaise, garlic and onion powders, kosher salt, white pepper, celery seed, and dill weed.
Next, zest the lemon and add it to the bowl. Then squeeze out the lemon juice with a reamer or juicer. Measure out the lemon juice and mix it into the other ingredients very well.
Take the chopped rotisserie chicken breasts out of the refrigerator and add them to the bowl. Pour in the sliced celery as well. Mix everything to uniformity and give the chicken salad a taste. Add a touch of lemon juice or salt to taste, if necessary. Serve with crackers, cucumber, lettuce cups, or just enjoy right out of the bowl!