In a large saucepan, melt butter over medium heat.
Add celery to the saucepan and cook for about 5 minutes, or until it's soft.
Stir condensed mushroom soup, broth, and onion soup mix into the saucepan. Heat until it starts to bubble.
Add chicken to the saucepan and warm it up in the mixture.
Mix in rice and then take the saucepan off the heat.
Arrange pepper halves, with their cut sides facing up, in a large, shallow baking dish.
Evenly distribute the chicken mixture into each pepper half.
Sprinkle lemon-pepper seasoning over the filled pepper halves.
Cover the peppers with foil and bake in an oven preheated to 350ºF for 55 minutes, or until everything is hot.
Remove the foil, top each pepper with cheese, and bake for about 5 more minutes, or just until the cheese has melted.
Notes
Can be made 24 hours in advance. Cover with foil and refrigerate before baking.3 Points ( 2022/2024 Plan)MyWW Points: 3 Blue Plan and 5 Green Plan)3 WW Freestyle Points and 5 Smart PointsWe are not associated with Weight Watchers/WW in any way. Double check points on their official calculator.