I don't know but it's probably one of these. I'd google each name and look at pics of them to find out.
List of South Asia
Family Agamidae
Laungwala Long-headed Lizard (Bufoniceps laungwalaensis) Rajasthan
Green Crestless Forest Lizard (Calotes andamanensis) Western Ghats
Emma Gray's Forest Lizard (Calotes emma) northeast India.
Green Forest Lizard (Calotes calotes) South India, Sri Lanka
Large Scaled Forest Lizard (Calotes grandisquamis) Western Ghats
Jerdon's Forest Lizard (Calotes jerdoni) India (Khasi hills, Meghalaya), Myanmar, China
Orange-lipped Forest Lizard (Calotes aurantolabium) Southern Western Ghats, sp. nov.
Indo-Chinese Forest Lizard (Calotes mystaceus) Northeast India, Myanmar, Thailand, Cambodia, Vietnam
Black-lipped Forest Lizard (Calotes nigrilabris) Sri Lanka
Roux Forest Lizard (Calotes rouxii) India
Oriental Garden Lizard (Calotes versicolor) Afghanistan, Pakistan, India (Andamans), Sri Lanka, Nepal, Bangladesh, Malay peninsula, Indo-China, China, Sumatra
Rough-horned Lizard (Ceratophora aspera) Sri Lanka
Small-horned Lizard (Cophotis ceylanica) Sri Lanka
Bay Islands Forest Lizard (Coryphophylax subcristatus) India (Andaman and Nicobar islands)
Blanford's Flying Lizard (Draco blanfordii) Northeast India, Bangladesh, Myanmar, Thailand, Malay peninsula
South Indian Flying Lizard (Draco dussumieri) Southwest China
Tubercled Agama (Laudakia tuberculata) Afghanistan, Pakistan, India, Nepal
Hump-nosed Lizard (Lyriocephalus scutatus) Sri Lanka
Wiegmann's Forest Lizard (Otocryptis wiegmanni) Sri Lanka
Rock Lizard (Psammophilus dorsalis) South India
Blanford's Rock Lizard (Psammophilus blanfordanus) South India
Horsfield's Spiny Lizard (Salea horsfieldii) South India
Anaimalai Spiny Lizard (Salea anamallayana) South India
Fan-throated Lizard (Sitana ponticeriana) India, Sri Lanka
Agile Agama (Trapelus agilis) Iran, Afghanistan, Pakistan, Northwest India
Indian Spiny-tailed Lizard (Uromastyx hardwickii) Pakistan, Northwest India