Sorry, just seen this.
As of before the Brentford game we were seventh in the league when it came to non-penalty xG FOR in Dyche's first 6 games, with 7.3. However we'd only scored 3 non-pen goals so that shows a clear underperformance (basically we should have scored 4 more than we actually did based on the quality of chances we'd created).
Under Lampard - which has to be stressed it's over 20 games so obviously a bit of a wider pool - we were 16th for non-pen xG ahead of the Brentford game.
So that is a clear, big improvement when it comes to chance creation.
I do think though even still we were underperforming our non-pen xG under Lampard, too. And over the season, again this is before Brentford, we were 15th in the league and basically 7 goals short of what we should have.
So it shows the issues. Under Lampard the quantity of chances wasn't there but there were still some big chances created that got missed (think Iwobi and Dom v Leicester, Gordon v Wolves etc). Under Dyche we're creating more high-quality opportunities but still missing plenty.
What is concerning under Dyche is our second-half xG is often way down. Against Forest it was 0.03 in the second half, which is shocking. I can't imagine it was much better yesterday.
We have to find a way of changing that. We probably deserved to put the game to bed in the first half yesterday but we need more routes to goal in second halves, especially when we're leading. Again, though, a lot of that comes down to poor players.