Relying totally on the KJV for all things is not wise as it is outdated and both culture and language has changed since the time it was written. Even the New King James Version doesn't use the word Evil in it. The word Evil likely had these meanings back in the day.
NASB
The One forming light and creating darkness, Causing well-being and creating disaster; I am the Lord who does all these things
NIV
I form the light and create darkness, I bring prosperity and create disaster; I, the Lord, do all these things.
NKJV
I form the light and create darkness, I make peace and create calamity; I, the Lord, do all these
things.’
NRSV
I form light and create darkness, I make weal and create woe; I the Lord do all these things.
I've seen dozens of debates based almost entirely upon this translation of this scripture with almost all of those accusing God of being "evil" or the source of evil on it and many of the people accusing God of evil were not Christians at all but were attacking Christianity.