Begin by cooking the bacon. You can cook bacon on a Traeger grill, or in the oven. Follow the link in the notes section to read how to make Traeger bacon, or read on to learn how to make bacon in an oven.
Line a rimmed sheet pan with foil. Remove the bacon from the packaging and lay the strips out in a single layer on top of the foil. Place the sheet pan in a cold oven, close the oven door, then turn the oven on to 400 degrees F. Cook the bacon until it's at your desired crispness, typically between 17 and 22 minutes depending on how thick your bacon is and how long your oven takes to warm up.
While the bacon is cooking, bring out a large mixing bowl and place the cooked and shredded chicken into it - this can either be rotisserie chicken, leftover chicken, or chicken you've cooked specifically for this chicken salad. Set the bowl aside.
Wash the cherry tomatoes and use a sharp knife and cutting board to cut them into halves or quarters, depending on how big they are. Place them in the bowl with the chicken when done.
If you're eating the chicken salad with lettuce, you can also wash and chop the lettuce with the knife and cutting board at this time. Set the lettuce to the side once you're done. You'll also want to take out a plate and line it with paper towels to set the cooked bacon on.
When the bacon is done cooking, remove the pan from the oven (be sure and use a hot pad or oven glove) and use a pair of tongs to remove the bacon and set it on the paper-lined plate to soak up the bacon grease. Let it rest for a couple of minutes to cool, then use the knife and cutting board to chop it into small pieces. You can do this by stacking several strips of bacon on top of each other and cutting them into small strips, then repeating until all the bacon is cut. Place the chopped bacon into the bowl with the tomatoes and shredded chicken.
Measure out the mayo and ground black pepper and it both to the mixing bowl. Use a large spoon and mix everything together until it's well combined.
At this point it's ready to serve. If you like, you can add in some chopped green onions or dill pickle to the salad, or you can eat it as is to have more of a true BLT flavor. You can serve this BLT chicken salad as is out of a bowl, on top of chopped lettuce, or in a sandwich with some gluten free bread.