Brush one large or two small-rimmed baking sheets with olive oil.
Toss cauliflower, peppers, and onion with a drizzle of olive oil and half the taco seasoning.
Add them to a section of the pan.
Brush pork chops with olive oil and place in remaining space on the pan.
Sprinkle with remaining taco seasoning.
Place in a 400° oven for 20-25 minutes until meat is cooked through.
Sprinkle cheddar over and return to oven for 2-3 minutes to melt.