Cook the bacon in a skillet until crispy, then chop it into small pieces.
In a large bowl, combine the thawed peas, chopped cauliflower, and sliced red onion.
In a separate bowl, whisk together sour cream, mayonnaise, apple cider vinegar, salt, and pepper.
Pour the dressing over the salad ingredients and toss until evenly coated.
Add the shredded cheddar cheese and crispy bacon, then gently mix everything together.
Taste and adjust seasoning as needed.
Chill in the refrigerator for at least 15 minutes for the flavors to blend.
Serve fresh and enjoy your creamy, crunchy, and flavorful low-carb pea salad!