Add diced bacon to a medium skillet or sauce pan over medium heat. Cook until crisp. Remove bacon from pan and set aside. Add stone ground mustard, honey, garlic, and salt and pepper to the bacon drippings. Combine well with a whisk.
Add apple cider vinegar to the pan, whisking to combine as pouring. Continue to whisk until the vinaigrette has thickened slightly. Add bacon bits back to the vinaigrette, if desired.
Pour into a jar that has been warmed under hot running water prior to adding the hot vinaigrette to prevent the container from cracking. Best served warm or at room temp.
In a sealable plastic bag, mix garlic, thyme, rosemary, lemon zest and juice, half (1/4 c.) of the olive oil, and salt and pepper. Add both tenderloins. Squeeze the air out of the bag and seal. Let marinate in the fridge for at least one hour.
Preheat the oven to 400 degrees F.
Remove tenderloins from bag and season both sides with salt and pepper.
Heat a large oven-safe pan on medium-high heat. Add the remaining olive oil to the pan. Sear each side of the loins until each side is browned.
Remove tenderloins from pan and add apple wedges. Cook for 2-3 minutes until the apples have browned.
Add the tenderloins on top of the apples and place the pan in the oven. Roast for 12-15 or until the internal temperature of the tenderloins is 140-150 degrees F.
Remove from the oven and let rest for 10 minutes before cutting.