Rinse the chicken and cut it into tenderloin-size pieces or 1-inch chunks, whichever you prefer. Then pat the chicken pieces mostly dry with a paper towel.
Place the flour and 1 teaspoon lemon pepper seasoning into a large resealable bag. Seal and shake to combine. Then add the chicken to the bag, seal, and shake to coat the chicken pieces.
Heat the butter or oil in a large skillet over medium-high heat. Once melted and hot, add the chicken to the skillet and brown each side. The chicken doesn't need to be cooked through at this point, just browned.
Use a slow cooker liner or spray the inside of the slow cooker with cooking spray, then place the browned chicken pieces inside. Sprinkle 1 tablespoon of lemon pepper seasoning over the chicken. Mix together the lemon juice and broth, then pour it over the chicken and seasoning. Cook on low for 3-4 hours. Serve with rice, noodles, and/or salad.
Instant Pot Instructions:
Follow instructions to prep chicken on saute setting and then add all ingredients to instant pot.
Cook on Chicken setting, or if using another pressure cooker for 15 minutes at high pressure.