Chika has parallel meanings. In Igbo, it combines Chi (God) and ka (greater) — meaning "God is supreme." In Japanese (千花), it combines chi (thousand) and ka (flower) — meaning "thousand flowers."
Chika Onyeani is the Nigerian-American author; Chika is also widely used in Japan.
Chika does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Chika reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.