Preheat your oven to 350°F (175°C). Season chicken breasts with salt and pepper, and cook in a hot skillet with olive oil until golden brown.
Cook bacon in a separate skillet until crispy. Remove from skillet, keeping 1 tablespoon of bacon drippings for added flavor.
Sauté sliced mushrooms and minced garlic in the bacon drippings until tender and golden brown.
Place chicken breasts in a baking dish. Cover with honey mustard sauce, then layer mushrooms and bacon on top. Finish with shredded Monterey Jack cheese.
Cover the dish with foil and bake for 20–25 minutes, removing foil in the last 5 minutes to brown the cheese.
Notes
Store leftovers in an airtight container in the fridge for up to 3 days or freeze for up to a month in portion-sized containers.