How much is a lot? Too much of even "good for you foods" is still too much. I love the roasted garlic my favorite restaurant in Boston but the amount of olive oil they used was way too much for me. I asked them to use less and chef actually came out to see how I like it. I loved it, even better than the original way. He said he used about a 1/4 of what he usually does. Wow, Hate to think of how many fat grams I was eating!
I use about a tablespoon for every 2 pounds of veggies. Using a good oil spritzer or tossing the veggies around in a big ziplock bag covers everything evenly.
I also love grilled fruit!